State v. LeRoya M. ( 2022 )


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    STATE OF CONNECTICUT v. LEROYA M.*
    (SC 20351)
    Robinson, C. J., and McDonald, D’Auria, Mullins,
    Kahn, Ecker and Keller, Js.
    Syllabus
    Convicted, after a trial to a three judge panel, of two counts of murder in
    connection with the deaths of her two children, the defendant appealed
    to this court. The police reported to the defendant’s home in response
    to a phone call from the defendant’s friend, who had received an alarming
    letter from the defendant in the mail. When the defendant exited her
    home after the police arrived, she had lacerations on her wrists and
    told the police that she had ‘‘saved them.’’ While the defendant was
    transported to the hospital, the police entered the defendant’s residence
    and found the children’s bodies, as well as a suicide note written by
    the defendant, in which she stated that, ‘‘if I burn for eternity at least
    I’ll know why I deserve it.’’ Autopsies revealed that the children died
    of acute intoxication from an antihistamine with sedative properties.
    At trial, the defendant did not dispute that she had killed her children
    but raised the affirmative defense of mental disease or defect, claiming
    that, at the time of the murders, she lacked the substantial capacity to
    either appreciate the wrongfulness of her conduct or to control her
    conduct within the requirements of the law. The defendant’s version of
    events was admitted into evidence largely through the testimony and
    written report of her expert witness, A, a forensic psychiatrist. According
    to A, the defendant was suffering from psychosis and, as a result, devel-
    oped a ‘‘religious delusion’’ that killing her children and herself was
    ‘‘God’s plan.’’ In A’s opinion, at the time she killed her children, the
    defendant did not appreciate that what she was doing was wrong and
    was not able to control her conduct in accordance with the law. A
    recounted how, on the day in question, the defendant took the children
    to a store and then to a fast food restaurant, where she conceived of a
    method to end their lives. Specifically, because the children had not yet
    been baptized, she decided to drown them to accomplish their death
    and salvation. According to A, the defendant bought over-the-counter
    sleep aids, which she gave to the children upon returning home. While
    they were sedated, she held their heads underwater in the bathtub. The
    defendant purportedly heard the voice of God tell her that it was time
    to come home. The state presented the testimony of its own expert, L,
    a forensic psychiatrist. According to L, there was no evidence that the
    defendant had suffered from a serious mental disease or defect at the
    time of the murders but, instead, had killed the children because she
    was angry about raising them alone. According to L, the manner in
    which the defendant committed the murders, certain statements the
    defendant made in her suicide note, and other communications were
    inconsistent with a religious delusion and affirmatively reflected the
    defendant’s appreciation of the wrongfulness of her actions. The trial
    court found that the defendant failed to satisfy her burden of proving
    that, as a result of mental disease or defect, she lacked substantial
    capacity to appreciate the wrongfulness of her conduct or to control
    her conduct within the requirements of the law. The court determined
    that A’s testimony was undermined by his failure to investigate or to
    adequately explain evidence of the defendant’s behavior that the court
    found to be inconsistent with a religious delusion, including the defen-
    dant’s communications exhibiting an appreciation of the wrongfulness
    of her conduct in the days leading up to the murders, her Internet
    research into the methods of poisoning children, and her provision of
    lethal amounts of medication to her children. On the defendant’s appeal
    to this court, held that the trial court reasonably rejected the defendant’s
    defense of mental disease or defect and the opinions of A related thereto,
    and, accordingly, this court affirmed the judgment of conviction: opinion
    testimony from mental health experts is central to a determination of
    the viability of the defense of mental disease or defect, and the credibility
    of expert witnesses and the weight to be given to their testimony on
    that issue are determined by the trier of fact, which may discount or
    reject expert testimony, so long as the discounting or rejection of such
    testimony is not arbitrary; in the present case, this court concluded that
    the trial court did not arbitrarily reject A’s testimony, especially in light
    of the directly conflicting expert testimony of L, including testimony
    that the defendant’s narrative of drowning her children while in the
    grip of a religious delusion was unsupported and contradicted by the
    defendant’s organized and focused behavior during the relevant time
    period, including her Internet activity, her communications with friends
    and family, her purchasing and printing of a mailing label to send the
    letter to her friend, and the statements in her suicide note that she
    would ‘‘burn for eternity’’ for her actions; moreover, A’s testimony was
    undermined by other evidence adduced at trial, including testimony
    from the defendant’s friends and family that they had communicated
    with the defendant in the days immediately before or after the murders
    and did not observe any symptoms of psychosis or religious delusion, the
    defendant’s text messages and Internet search history, and the autopsy
    reports, which conflicted with defendant’s report that her children had
    died from drowning; furthermore, contrary to the defendant’s claim, the
    fact that L conducted fewer interviews and spent less time with the
    defendant than A did was of no consequence, as the trial court, which
    was responsible for determining the credibility of the expert witnesses
    and the weight to be given to their testimony, reasonably credited L’s
    testimony.
    Argued February 24—officially released September 13, 2021**
    Procedural History
    Substitute information charging the defendant with
    two counts of the crime of murder, brought to the Supe-
    rior Court in the judicial district of New Haven and
    tried to a three judge court, Vitale and B. Fischer, Js.,
    and Hon. Jon C. Blue, judge trial referee; finding and
    judgment of guilty, from which the defendant appealed.
    Affirmed.
    Naomi T. Fetterman, for the appellant (defendant).
    Timothy F. Costello, senior assistant state’s attorney,
    with whom, on the brief, were Patrick J. Griffin, state’s
    attorney, and Stacey M. Miranda, senior assistant
    state’s attorney, for the appellee (state).
    Opinion
    ECKER, J. The defendant, LeRoya M., was charged
    with two counts of murder in violation General Statutes
    § 53a-54a (a) for killing her seven year old son, D, and
    her six year old daughter, A. The defendant elected a
    trial before a three judge court; see General Statutes
    § 54-82 (a) and (b); and presented expert testimony in
    support of an affirmative defense of lack of capacity
    due to mental disease or defect pursuant to General
    Statutes § 53a-13,1 otherwise known as the insanity
    defense. The state presented expert testimony at trial
    to rebut the defendant’s insanity defense. The trial court
    ultimately did not find the defendant’s expert testimony
    to be reliable or credible and, as a result, concluded
    that the defendant had ‘‘failed to satisfy her burden of
    proving that, as a result of mental disease or defect,
    she lacked substantial capacity to appreciate the wrong-
    fulness of her conduct or to control her conduct within
    the requirements of the law.’’ On appeal, the defendant
    claims that no rational fact finder reasonably could
    have rejected her insanity defense on the present factual
    record. We disagree and affirm the judgment of convic-
    tion.
    In a thorough memorandum of decision, the court
    found the following relevant facts, as supplemented by
    the undisputed evidence adduced at trial. On Tuesday,
    June 2, 2015, the defendant’s best friend of eighteen
    years, Jazmin Santiago, received a letter and two credit
    cards from the defendant in the mail. ‘‘In the letter, the
    defendant directed . . . Santiago to use the credit
    cards to ‘take care of the [kids’] tuition as much as you
    can . . . make sure you take the [money] out and use it
    for your kids. My mom is my beneficiary for everything.
    I did what I could for as long as I could.’ ’’ The letter
    was posted via a United States Postal Service ‘‘Click-
    N-Ship’’ label, which had been produced online and
    printed by computer on May 28 or 29, 2015. The return
    address on the label was the defendant’s residence in
    East Haven.
    ‘‘Santiago, alarmed by the contents of the letter,
    called the defendant’s cell phone at approximately 2:21
    p.m. on June 2. The defendant did not answer. . . .
    Santiago followed up with a text message to the defen-
    dant’s cell phone and again received no response. . . .
    Santiago continued to call the defendant’s cell phone,
    and the defendant eventually answered the phone. The
    defendant told . . . Santiago that ‘she was tired.’ . . .
    Santiago asked the defendant if ‘she was okay,’ and the
    defendant responded that she ‘was okay.’ Not satisfied
    with the defendant’s response . . . Santiago continued
    to inquire of the defendant and asked the defendant to
    come to her home. The defendant stated she ‘could not
    come over.’ Undeterred, Santiago told the defendant
    that she would come to the defendant’s residence, and
    the defendant stated that, if Santiago did so, she ‘would
    not open the door.’ Nevertheless . . . Santiago drove
    to the defendant’s house and brought the defendant’s
    letter along with her. The defendant lived ‘five minutes’
    from her home.
    ‘‘The doors and windows of the defendant’s house
    were locked when . . . Santiago arrived. The defen-
    dant did not answer the door. Santiago called the defen-
    dant’s cell phone . . . . The defendant answered and
    said she was ‘okay’ and ‘resting.’ During one of their
    ensuing cell phone conversations . . . Santiago asked
    the defendant about [D] and [A]. The defendant told
    . . . Santiago that ‘[A] was good’ and ‘[D] was sleeping.’
    Alarmed [by] the defendant’s conduct and statements
    . . . Santiago next called 911. . . .
    ‘‘When the police arrived . . . Santiago gave the
    police at the scene her cell phone. The police told Santi-
    ago to call the defendant, but the defendant did not
    answer the phone. Rather, the defendant opened the
    second floor exterior door of the residence . . . [and]
    descended the stairs . . . .’’ As she descended the
    stairs, the defendant asked the police, ‘‘ ‘can we just
    leave,’ ’’ and told them that ‘‘she had ‘saved them.’ ’’ The
    police noticed lacerations on the defendant’s wrists,
    which were treated by members of the East Haven Fire
    Department. The defendant was transported to Yale-
    New Haven Hospital and subsequently admitted to the
    Yale Psychiatric Institute (YPI) for a mental health eval-
    uation.
    In the meantime, ‘‘[a]s the events on scene unfolded
    . . . Santiago frantically asked the police to check on
    the whereabouts of [D] and [A].’’ East Haven police
    officers entered the defendant’s home using the exterior
    stairway on the second floor to search for the children.
    Upon entry, ‘‘[t]he police encountered an ‘overwhelm-
    ing’ presence of natural gas . . . . The police were
    forced to exit the home and notified the fire department
    on the scene. Once the fire department ‘shut off’ the
    gas supply, the police reentered the home to search for
    the children. . . . The children were eventually located
    on the first floor [in the living room]. It was readily
    apparent to the police due to the decomposition of the
    children’s bodies and attendant smell that each of them
    was dead’’ and ‘‘had been there ‘a long time.’ ’’
    Near the feet of the children’s bodies, the police found
    a letter written by the defendant (suicide note), which
    provided:
    ‘‘I’m sure there’s an expert somewhere [who] will say
    the children suffered, but I let them know they were
    loved very much and they were going to heaven. We
    said the Lord’s Prayer to protect their souls. I know
    this was meant to end the way it did. I don’t know the
    reason why, but we were meant to die today. After
    [thirty-five] years, I was convinced for a while I would
    be okay and I wouldn’t ever be this sad again because
    I had great jobs, good kids and a house and car and I
    did these things all by myself. I am all by myself still.
    I’m not meant to be here past this time. It’s [okay] and
    I’m not scared. I’m numb and if I burn for eternity at
    least I’ll know why I deserve it. I don’t know what I
    did to deserve this life and these kids didn’t deserve to
    be brought into it to have sadness and suffering all of
    the time. I watch them cry and act out because they
    don’t know what they did for their parents to leave
    them to fend for themselves.
    ‘‘I was alone and I was meant to be alone. There is
    no true way to come back from who I am. I am not
    looking for pity. I want the opposite. Years from now
    I will be forgotten but we’re all dust. God already knew
    who I was. I couldn’t leave [any more] of my kids to
    the system. They don’t all get a happy ending. I love
    them all. I love them all so much I only wanted to be
    better for them but they were missing the [one] thing
    I couldn’t ever give them on my own. They were in pain
    and now they’re in heaven. I prayed and God knows
    my heart, he made me the way I am and knew we
    weren’t fit for this world past this time.
    ‘‘There will thankfully be no fighting over anything I
    have. I will be cremated and the bank will get the house
    and the car. That’s it. I really tried. [Thirty-five] was
    great, my friends and family were great. We all have
    our own lives. There’s nothing anyone could’ve done.
    I asked God to stop me if I was making a mistake. I
    asked to show me I was wrong and save them. They
    should not be left to burden anyone because I am the
    only one who could love them like a mother. Not an
    institution or a social worker.
    ‘‘[M],2 you cut me out then cut me up, you left these
    children and only started to care when you saw I was
    seeing someone else. You couldn’t even be a man and
    admit you hit and choked me. You just wanted to hurt
    and ruin me and now you have. You cut off the nose
    but you’re the face and you’ll suffer from your decisions.
    I told you when I first got pregnant with [D] that I could
    not be a single parent again. You did that and left these
    children to mourn for you every night before bed and
    in school when they should’ve been happy with friends.
    You get your child support back, you save all your
    money and possessions you cared about more than your
    family. I warned you I couldn’t do it alone when we
    were going to reconcile but you left them again anyway.
    You can’t take care of them any better than I was and
    now they’ll always be a faint memory. Your daughter
    [J]3 should be happy about the things she said to them.
    You should feel better that she was being abusive to
    them and you did nothing about it. I will not let anyone
    abuse or take advantage of [any more] of my children.
    I hope the things [J] did to them will haunt her for the
    rest of her life. They will be in heaven with people who
    we lost and loved. They deserve that.
    ‘‘They got to do all of the things they wanted to do
    before they died today. They ate their favorite things.
    They had ice cream and they wanted to paint their nails
    so we got nail polish and they had fun and really liked
    how it came out. I saw them truly happy not being
    shipped off to multiple babysitters and just hanging out
    with mommy. I always knew I’d be a mom but I just
    wish I had children within a family with the man who
    was supposed to care for me and cares for his family
    the way he should have with me. I would have been a
    different mother. I would have had happy children and
    even if I was sad and unable to care for them, he would
    have been there to care for us all and I would have
    gotten through it and maybe made it to [thirty-six]. I
    just couldn’t imagine the [second] half of my life being
    this way. Dragging my kids along for the ride. I made
    the mistake the first time and didn’t end things when
    I could have . . . before I made it far and had more
    kids. My older kids escaped the same fate because I
    was too depressed to move and make it happen. My
    angel saved me, saved us. Now they are suffering. I
    won’t do this injustice to my other kids. [D.W.]4 is sadly
    already lost. [N]5 is without a home and a family who
    loves her. [D.J.]6 has survived despite his challenges
    and I can only hope he’s happy and healthy.
    ‘‘There’s no more pain for [D] and [A]. They left this
    world as innocent as they were when they came into
    it . . . not scarred and [heartbroken] by people who
    make promises to love and protect them. They won’t
    have the loss and betrayal of girlfriends and boyfriends
    who promise to always be there. I wish my parents
    would have awarded me the same courtesy if the
    thought ever crossed their minds just once. We’re all
    just dust. I’m [thirty-five] and I did good things at least
    in the past [eight] years. It wasn’t enough to make me
    or my children happy. None of it mattered. I raised
    them not to covet ‘things’ and they didn’t, they wanted
    a happy life with a family. I just couldn’t give them that.
    ‘‘I’m done. There’s nothing else to say and no further
    explanation to give. We love you and be proud of these
    [two] angels that will watch over and protect you all.’’
    (Footnotes added.)
    A subsequent autopsy revealed that the cause of D’s
    death was ‘‘acute diphenhydramine intoxication and
    that his manner of death was homicide.’’ Diphenhydra-
    mine ‘‘is an antihistamine with sedative properties’’ that
    is found in many ‘‘ ‘over-the-counter’ medications,’’ such
    as Benadryl. With respect to A, an autopsy revealed
    that the ‘‘cause of [her] death was acute intoxication
    from the combined effects of diphenhydramine and
    alcohol, and her manner of death was homicide. Signifi-
    cantly . . . the toxicology examination revealed that
    the ethanol level present in [A] was .091,’’ which is
    above the .08 ‘‘threshold sufficient for prosecution of
    an adult for operating a motor vehicle while under the
    influence.’’
    During the search of the defendant’s home, the police
    found a ‘‘significant quantity of both ‘over-the-counter’
    and prescription medication,’’ including medications
    containing the active ingredient diphenhydramine. The
    police also found a ‘‘substantial quantity of alcohol,
    including tequila, vodka, ‘Southern Comfort,’ and beer
    . . . .’’ The police seized the defendant’s cell phone,
    from which they were able to extract her text messages,
    e-mails, and Internet search history from ‘‘ ‘around the
    time frame’ of the crimes.’’ This data helped to establish
    a timeline for the murders and illuminated the defen-
    dant’s state of mind during the critical time period of
    May 27, through June 2, 2015.
    The defendant’s Internet search history revealed that
    she ‘‘began searching for methods to kill her children
    on Wednesday, May 27, 2015. Fourteen such searches
    occurred on May 27, and many related generally to
    ‘overdose’ deaths. The searches resumed on Thursday,
    May 28, 2015, and specifically . . . referenced diphen-
    hydramine. The searches related to ‘overdose’ continue
    from May 28, through June 1, 2015.’’
    The defendant communicated with her family,
    friends, coworkers, and daycare provider during this
    time. For example, on May 28, the defendant texted
    her daycare provider that ‘‘the kids won’t be coming
    [today].’’ The defendant texted her employer on May
    29, that, ‘‘I’m sorry I’m not going to make it in today.’’
    After D and A failed to arrive at daycare as scheduled
    on May 29, and June 1, her daycare provider texted and
    called the defendant repeatedly to inquire about the
    whereabouts of the children. On the morning of June
    2, the defendant texted a response to her daycare pro-
    vider, stating, ‘‘[m]y dad died I’m just trying to cope
    . . . [w]e’re going to be home this week,’’ even though
    the defendant’s father was alive and well.
    The defendant also communicated with her oldest
    son, D.W., after he arrived at her home on the evening
    of June 1, to retrieve some belongings. While D.W. was
    on the defendant’s front porch knocking on the door,
    the defendant texted him that ‘‘[m]y car is not working
    and I’m at [work]. If [you] want to come back [Friday]
    or Saturday.’’ D.W. noticed the ‘‘strong smell of gas’’
    emanating from the defendant’s residence but ‘‘figured
    she was at work and everything was fine’’ and left.
    Sometime between May 27, and June 2,7 the defendant
    drafted and ‘‘deleted a text message to her mother, in
    which she told her mother, ‘I don’t want or deserve a
    service . . . I just want to be cremated,’ and another
    which indicated, ‘I love you and I’m sorry. I couldn’t
    leave any burdens for others to [bear].’ ’’ The defendant
    also texted M, her ex-husband and the father of D and
    A. The trial court characterized the tone of these text
    messages as ‘‘angry and spiteful . . . .’’ ‘‘The tone is
    similar to the passages in . . . the defendant’s admis-
    sion and purported suicide note . . . .’’ For example,
    the defendant wrote ‘‘a derisive and spiteful text’’ mes-
    sage to M that ‘‘ ‘[you] got off [scot] free,’ and ‘I hope
    you enjoyed the moments you took for granted . . . .’ ’’
    Additionally, the defendant texted her former boyfriend
    regarding ‘‘their past romantic involvement . . . .’’
    After the police completed their investigation, the
    defendant was arrested and charged with two counts
    of murder. At trial, the defendant did not dispute that
    she had killed D and A but raised the affirmative defense
    of insanity, arguing that, ‘‘at the time she allegedly com-
    mitted the proscribed act or acts, she had a mental
    disease or defect and that, as a result of that mental
    disease or defect, lacked the substantial capacity to
    either appreciate the wrongfulness of her conduct or
    control her conduct within the requirements of the
    law.’’8 In support of this defense, the defendant pre-
    sented the expert testimony of two witnesses: Vinneth
    Carvalho, her treating psychiatrist at York Correctional
    Institution (YCI), and Paul Amble, a board certified
    forensic psychiatrist. Carvalho testified that, when the
    defendant was admitted to the psychiatric infirmary at
    YCI on June 10, 2015, she was suffering from auditory
    hallucinations, persecutory delusions, and paranoia.
    Specifically, the defendant reported that ‘‘she was hear-
    ing the voice of God, and she talked about the voice
    of God telling her to protect her children, and that—
    that was why she killed her children. She wanted to
    protect them. She felt—she couldn’t understand initially
    why God had left her, not let her die. As time went on,
    that morphed into maybe God left me here for a reason,
    to perhaps memorialize my children. But all her conver-
    sations had this theme of this is what God wants me
    to do.’’ Additionally, the defendant exhibited symptoms
    of paranoia, believing that a nurse ‘‘was a voodoo priest-
    ess . . . [who] was going to poison her’’ and that,
    ‘‘when other patients touched her . . . they were trans-
    mitting spirits to her.’’ The defendant’s symptoms
    improved significantly with antipsychotic medication
    but never ‘‘went away completely’’ because she still
    believed that ‘‘this was how God wanted her to be or
    [that] this is what God would have wanted . . . .’’
    Amble interviewed the defendant ‘‘a total of ten
    times’’ and attempted to corroborate the defendant’s
    self-reporting through other sources, such as police
    reports, medical records, Department of Children and
    Families (DCF) records, and interviews with the defen-
    dant’s friends and family. The defendant’s version of
    events, as reported to Amble, was admitted into evi-
    dence through Amble’s written report and in-court testi-
    mony. According to Amble, the defendant ‘‘began to
    specifically plan for the ending of her children’s [lives]
    three days prior to the . . . offense, [but] she had been
    contemplating her own death for several months. She
    linked her suicidal intent not only to numerous mount-
    ing stressors in her life, but also to a belief that such
    a plan was ordained by God, and, as new conflicts and
    stressors arose, this simply gave her confirmation of
    God’s plan.9
    ***
    ‘‘On Thursday, May 28, [the defendant’s] children
    were scheduled to go to school. She had not specifically
    planned to end her children’s lives that day but felt that
    her fate was likely to arrive soon, so she decided to
    spend the entire day with them, doing things they
    enjoyed. She let her children sleep until about 10 [a.m.]
    She did not contact the school to let them know the
    children were not going in, having an underlying
    thought that perhaps this would be their last day alive.
    When they woke, they were given breakfast and spent
    the rest of the morning and into the afternoon watching
    movies . . . . They prepared lunch together and gener-
    ally had an enjoyable day. She then brought them out
    to collect their dinner, which was a take-out meal from
    McDonald’s. . . . They then went to the nearby Wal-
    Mart in East Haven, where she allowed her kids to buy
    a treat for dessert . . . and nail polish.
    ‘‘It was at the McDonald’s [restaurant] when [the
    defendant] conceived of the method to end her chil-
    dren’s [lives]. She decided that the children had not
    yet been baptized and felt that to drown them would
    accomplish their death and salvation. She did not know
    how to accomplish this until walking through Wal-Mart,
    when the idea came to her to purchase sleeping medica-
    tions in order to sedate them. She went to the pharmacy
    section and purchased a package of Wal-Mart brand
    sleep aids, [ZzzQuil], and either Aleve or Advil PM. . . .
    She said, ‘I didn’t want the kids to be scared. I wanted
    them relaxed and sweet.’ . . .
    ‘‘Upon their return [home], the children ate their
    meals while watching another movie . . . . Following
    the meal, the children had their treat from Wal-Mart.
    [The defendant] then took out all the pills from the
    blister pack of Wal-Mart brand sleeping medication,
    which contain[ed] [twenty-four] pills, and gave each
    child [twelve] pills telling them they were simply medi-
    cation they needed to take. The medication pills were
    chewable, and the children ate them immediately upon
    their mother’s instruction. . . .
    ‘‘While the movie was playing, [the defendant] drew a
    bath for her daughter in the downstairs bathtub. Feeling
    that enough time had elapsed for her daughter to
    become drowsy, she called her down to the bathroom.
    Her daughter came, and they said the Lord’s Prayer
    together. [A] then undressed and got into the tub. [The
    defendant] told her daughter she loved her and told her
    to sit back so she could wash her hair. [The defendant]
    said her daughter was visibly sedated with the medica-
    tion.’’ (Footnote added.) The defendant told her daugh-
    ter ‘‘how much [she] loved her’’ and ‘‘held her [head]
    underwater . . . until she could see a look in her eye
    that suggested [A] was no longer alive.’’
    ‘‘[The defendant] then picked her daughter up from
    the tub and brought her into her bedroom on the first
    floor, dried her off and dressed her in her favorite dress.
    With her daughter lying there, she returned to the bath-
    room, let out the rest of the water from the tub and
    drew a new bath for her son. She then called for her
    son, but he was too sedated to bring himself to the
    bathroom. She went and assisted him, seeing that he
    was, ‘heavily medicated.’ In the same manner, she said
    the Lord’s Prayer with her son’’ and held his head under-
    water for ‘‘approximately [one] minute’’ until she ‘‘was
    convinced her son was also dead.’’ She dressed her son
    and then dragged both children’s bodies into the living
    room, where she positioned them ‘‘with their heads
    near each other, their arms to their side[s], holding
    hands.’’
    The defendant cleaned up the house and then used
    a disposable razor to ‘‘deeply cut her wrists. . . . With
    her arms bleeding profusely, she laid down with her
    head by the children’s feet and her feet up by . . . their
    heads. She draped her arms over her children’s legs
    and passed out.’’
    The next day, the defendant awoke and ‘‘realized she
    had not died.’’ She then wrote the suicide note found
    at the feet of the children’s bodies, as well as the letter
    to Santiago. The defendant’s recollection of ‘‘the rest
    of her time in the house ‘was fuzzy,’ ’’ but she spent
    the next few days before she was found on June 2,
    attempting to kill herself by cutting her wrists, overdos-
    ing on medication, and turning on the gas in the home.
    Amble testified that, in his expert opinion, the defen-
    dant was suffering from a mental disease or defect at
    the time she killed D and A, specifically, psychosis,
    which is characterized by ‘‘[h]allucinations, delusions,
    disorganized thinking, disorganized conduct, [and] flat-
    tened affect.’’10 Amble opined that, due to her psychosis,
    the defendant had developed ‘‘a ‘religious delusion,’ ’’
    which he defined as a ‘‘ ‘fixed false belief,’ ’’ ‘‘that killing
    her children and herself was ‘God’s plan.’ ’’ ‘‘Neverthe-
    less . . . Amble stated that this ‘religious delusion’ did
    not prevent [the defendant] from being able to engage
    in deception’’ or conduct ‘‘ ‘independent from’ the psy-
    chosis,’’ such as writing a ‘‘well organized,’’ ‘‘clear,’’
    ‘‘succinct,’’ and ‘‘logical’’ suicide note. In Amble’s opin-
    ion, at the time she killed D and A, the defendant ‘‘didn’t
    appreciate what she was doing was wrong, and she
    wasn’t able to rationally control her conduct in accor-
    dance with the law.’’
    On cross-examination, Amble conceded that, prior
    to the murders, none of the defendant’s friends, family,
    or coworkers noticed the defendant engaging in any
    psychotic behavior, exhibiting any religious delusions,
    or focusing on religious matters, such as quoting the
    Bible or talking about God. Indeed, at trial, the defen-
    dant’s sister testified that she spent approximately two
    hours with the defendant on the afternoon of May 25,
    2015, and the defendant appeared ‘‘upbeat’’ and was
    ‘‘jok[ing] and laugh[ing] as usual.’’ Amble also admitted
    that some of the defendant’s communications at or
    around the time of the murders were not consonant
    with the existence of a religious delusion. For example,
    Amble ‘‘[did not] know’’ why the defendant would text
    her mother that she did not ‘‘want or deserve a service,’’
    if she was ‘‘utterly convinced that this was God’s plan.’’
    Additionally, Amble acknowledged that, if the defen-
    dant truly was suffering from a fixed false belief that
    she ‘‘was carrying out God’s plan,’’ then she ‘‘wouldn’t,
    at least in her [own] mind’’ burn for eternity, despite
    the statement in her suicide note, ‘‘if I burn for eternity
    at least I’ll know why I deserve it.’’ Amble observed
    that the defendant’s suicide note reflected ‘‘some confu-
    sion in her thinking about whether this was the right
    thing.’’11
    Although Amble interviewed the defendant multiple
    times in 2015 and 2016, she did not inform him until a
    few months before trial, on October 17, 2018, that she
    actually ‘‘hear[d] the voice of God prior to the [murders]
    . . . saying, ‘[i]t’s time to come home.’ She said the
    voice was clear and sounded as though someone [was]
    sitting in the seat next to her.’’ Amble acknowledged
    that there is a distinction between interpreting the will
    of God and having auditory hallucinations of God’s
    voice, and that the defendant’s failure to inform him
    previously of this ‘‘important . . . psychotic symptom’’
    was a ‘‘significant omission . . . .’’ Nonetheless, Amble
    continued ‘‘to hold the opinion that, at the time of the
    . . . offense, [the defendant’s] actions were the product
    of her delusional belief that God’s will for her was to
    end her life and the lives of her . . . children,’’ and
    that she ‘‘did not have the rational capacity to prevent
    her actions [or to] appreciate the wrongfulness of her
    conduct at the time she ended their lives.’’
    To rebut the defendant’s insanity defense, the state
    proffered the expert testimony of Catherine Lewis, a
    board certified forensic psychiatrist. Lewis interviewed
    the defendant for a total of about eleven hours and
    reviewed various other sources of information, such as
    police reports, the defendant’s medical records, and the
    defendant’s DCF records. ‘‘In contrast to . . . Amble
    . . . Lewis opined that she did not see evidence of a
    ‘serious’ mental disease or defect,’’ such as psychosis,
    ‘‘on the part of the defendant at the time of the offenses.
    . . . Rather . . . Lewis diagnosed the defendant with
    a mixed personality disorder with antisocial and border-
    line features.12 Although borderline features ‘can result
    in transient psychosis’ . . . Lewis concluded that there
    was ‘inadequate evidence’ that it existed at the time of
    the offenses.’’13 (Footnote added.) Lewis pointed out
    that the defendant has ‘‘a long history of aggressive and
    violent behavior’’ and ‘‘had been evaluated many times
    over the years, beginning in childhood, by social work-
    ers, psychologists, and psychiatrists.’’ Despite multiple,
    prior psychological evaluations, the defendant had
    never previously been diagnosed with a major mental
    illness, such as psychosis. In Lewis’ expert opinion, the
    defendant killed her children because ‘‘she was angry
    and upset’’ at having to raise them on her own ‘‘and
    [was] potentially using substances and therefore disin-
    hibited and took action on the available people,’’
    namely, D and A. Lewis believed that, at the time she
    killed her children, the defendant had the ‘‘ability to
    conform her conduct to the requirements of the law or
    to appreciate the wrongfulness of her conduct at the
    time of the alleged offenses.’’
    Lewis explained that the defendant’s suicide note
    was inconsistent with psychotic thinking or a religious
    delusion. The defendant’s suicide note was ‘‘organized.
    It’s laid out coherently. There’s no evidence of a thought
    disorder such as perseveration. Tangentially, circum-
    stantially, it’s not there.’’ There also was no mention of
    baptism; instead, according to Lewis, the suicide note
    reflected the defendant’s hurt, anger, and appreciation
    of the wrongfulness of her actions. Lewis asked, ‘‘why
    would somebody burn for eternity for . . . ushering
    her children into heaven? Why would God burn some-
    one for eternity who saved her children’s souls?’’
    Like Amble, Lewis testified that ‘‘a delusion is a fixed,
    false belief.’’ Although ‘‘[p]eople who are truly delu-
    sional do strange things,’’ their behavior tends to
    ‘‘[make] sense’’ within the context of the delusion, and
    they ‘‘don’t waver . . . .’’ With respect to the defen-
    dant, Lewis explained that ‘‘[y]ou don’t just come off a
    delusion the way it’s described in this case. It doesn’t
    come on suddenly . . . it’s just not the trajectory.’’ In
    particular, ‘‘the whole baptism angle’’ did not ‘‘make a
    lot of sense to [Lewis] for a few reasons.’’ First, the
    defendant herself was not baptized, and, ‘‘if you think
    baptism is necessary to go to heaven, and you kill your
    children so you can be there with them, how are you
    gonna be there with them if you’re not baptized? It didn’t
    make any sense.’’ Second, ‘‘people who have religious
    delusions will tell [other] people about it,’’ but the defen-
    dant’s ‘‘contemporaneous texts . . . never [mention]’’
    the defendant’s religious delusions. Third, ‘‘poisoning
    someone isn’t consistent with baptism. It’s just . . .
    not how delusions work’’ because ‘‘it’s not consistent
    to sedate people to be baptized.’’ Lewis stated: ‘‘[I]n
    plain English, the story doesn’t make sense. It just
    doesn’t make sense. The baptism thing is like spurious.
    The story would make more sense to me if . . . [the
    defendant] was so overcome and overwhelmed with
    caring for [her] children . . . was angry . . . [and]
    thought [they would] all be better off in heaven [that
    she] killed them with Benadryl. That would make more
    sense . . . .’’
    On the basis of the foregoing evidence, the trial court
    concluded that the defendant had committed the
    charged offenses by ‘‘intentionally formulat[ing] a plan
    to kill her children, [taking] intentional and deliberate
    action to carry out that plan, and employ[ing] a method-
    ology consistent with that intent and plan.’’ With respect
    to the defendant’s insanity defense, the court deter-
    mined that ‘‘Amble’s opinion that the defendant, as a
    result of mental disease or defect, lacked substantial
    capacity either to appreciate the wrongfulness of her
    conduct or to control her conduct within the require-
    ments of the law was undermined by his failure to
    investigate, or adequately explain, evidence that is at
    variance with that opinion,’’ thus ‘‘adversely affecting
    the reliability and credibility of his testimony.’’ The
    court provided the following examples of evidence and
    methodological flaws that, in its view, undermined
    Amble’s opinion: (1) the statement in the defendant’s
    suicide note, ‘‘if I burn for eternity at least I’ll know
    why I deserve it,’’ which the court said exhibited an
    ‘‘obvious appreciation by the defendant of the wrong-
    fulness of her conduct,’’ (2) Amble’s failure to ask the
    defendant why she wrote the suicide note or for whom
    it was intended, (3) Amble’s failure ‘‘to explain ade-
    quately, to the satisfaction of the [court],’’ how the
    defendant’s text messages were ‘‘consistent with a psy-
    chosis or ‘religious delusion,’ ’’ (4) the defendant’s sui-
    cide note contained an ‘‘impassioned and remonstrat-
    ing’’ ‘‘diatribe against [M], the children’s father,’’ which
    the court found to be inconsistent with a ‘‘ ‘religious
    delusion,’ ’’ (5) Amble’s failure to ask the defendant if
    she believed suicide is a sin, why she needed to medi-
    cate the children to baptize them, and why there was
    alcohol in A’s system at the time of her death, (6) the
    belated timing of the defendant’s revelation that she
    heard the voice of God before the murders ‘‘adversely
    impact[ed] its credibility, especially given its proximity
    to the start of trial,’’ and (7) the inconsistency between
    Amble’s opinion and Santiago’s statements to Amble
    that there were no ‘‘apparent signs of a psychosis, hallu-
    cinations, ‘religious delusions,’ or loss of cognitive func-
    tioning’’ prior to the murders.
    In light of the other evidence adduced at trial, includ-
    ing, but not limited to, Lewis’ expert testimony, the
    autopsy report, and the evidence of the defendant’s
    demeanor and state of mind around the time of the
    murders, the trial court was ‘‘not convinced the ‘bap-
    tism’ narrative self-reported by the defendant actually
    occurred.’’ The court was ‘‘not persuaded that the chil-
    dren were in fact drowned,’’ and, even if they were, ‘‘it
    is clear that they were given lethal amounts of medica-
    tion and were poisoned. . . . Poisoning someone is not
    consistent with ‘baptism.’ ’’ The court also found the
    following relevant evidence to be inconsistent with the
    defendant’s baptism narrative and the existence of a
    religious delusion at the time of the murders: (1) the
    defendant herself was not baptized, and it was ‘‘unclear
    how [she] would join [her children] in heaven,’’ (2)
    ‘‘[t]he defendant never mentioned baptism, or any
    remotely ‘religious delusion,’ in her confession and ‘sui-
    cide’ note, text messages or conversations immediately
    before or after the crimes,’’ (3) the defendant spent
    ‘‘hours researching how to kill [D and A] with medica-
    tion’’ and drafted text messages that exhibited her
    ‘‘appreciation of the wrongfulness of her conduct,’’ say-
    ing that she was ‘‘ ‘sorry’ ’’ and did not ‘‘deserve a ser-
    vice,’’ (4) the absence of evidence of any hallucinations
    ‘‘at the time of the offense,’’ and (5) ‘‘[t]he deception
    and falsehoods propagated by the defendant in contem-
    poraneous text messages and phone conversations
    . . . .’’ Accordingly, the court found that ‘‘[t]he defen-
    dant . . . failed to satisfy her burden of proving that,
    as a result of mental disease or defect, she lacked sub-
    stantial capacity to appreciate the wrongfulness of her
    conduct or to control her conduct within the require-
    ments of the law.’’
    The defendant filed a motion for a judgment of acquit-
    tal; see Practice Book § 42-53 (b); claiming that no
    rational fact finder reasonably could reject her insanity
    defense. Alternatively, the defendant asked the court
    to set aside the verdict and to order a new trial, claiming
    that its ‘‘rejection of the defense of lack of capacity
    under . . . § 53a-13 is against the weight of the evi-
    dence . . . .’’ The court denied the defendant’s motions
    and sentenced the defendant to consecutive terms of
    60 years of incarceration on each count of murder, for
    a total effective sentence of 120 years’ incarceration.
    This appeal followed.14
    Our review is governed by the following principles,
    most recently articulated by this court in State v. Weath-
    ers, 
    339 Conn. 187
    , 
    260 A.3d 440
     (2021). Importantly,
    insanity is an affirmative defense, which means that
    the defendant bore the burden of proving legal insanity
    by a preponderance of the evidence. 
    Id., 209
    . The insan-
    ity defense ‘‘has both a cognitive and a volitional prong.
    . . . Under the cognitive prong . . . a person is con-
    sidered legally insane if, as a result of mental disease
    or defect, [she] lacks substantial capacity . . . to
    appreciate the . . . [wrongfulness] of [her] conduct.
    . . . Under the volitional prong, a person also would
    be considered legally insane if [she] lacks substantial
    capacity . . . to conform [her] conduct to the require-
    ments of law.’’ (Citation omitted; internal quotation
    marks omitted.) State v. Madigosky, 
    291 Conn. 28
    , 39,
    
    966 A.2d 730
     (2009). The present case was decided by
    a three judge court instead of a jury, but, nonetheless,
    ‘‘the burden is on the defendant to prove [her] affirma-
    tive defense, the normal rules for appellate review of
    factual determinations apply and the evidence must be
    given a construction most favorable to sustaining the
    court’s verdict.’’ (Internal quotation marks omitted.)
    State v. Weathers, supra, 209.
    ‘‘Undoubtedly, [o]pinion testimony from psychia-
    trists, psychologists, and other [mental health] experts
    is central to a determination of insanity. . . . Through
    examinations, interviews, and other sources, these
    experts gather facts from which they draw plausible
    conclusions about the defendant’s mental condition,
    and about the effects of any disorder on behavior. . . .
    At trial, they offer opinions about how the defendant’s
    mental condition might have affected [her] behavior at
    the time in question. . . . Unlike lay witnesses, who
    can merely describe symptoms they believe might be
    relevant to the defendant’s mental state, [mental health]
    experts can identify the elusive and often deceptive
    symptoms of insanity and tell the [trier of fact] why
    their observations are relevant. . . . In short, their goal
    is to assist [fact finders], who generally have no training
    in psychiatric matters, to make a sensible and educated
    determination about the mental condition of the defen-
    dant at the time of the offense.’’ (Internal quotation marks
    omitted.) Id., 210.
    Equally well settled are the rules governing the per-
    missible use of expert testimony at trial. The trier of
    fact ‘‘can disbelieve any or all of the evidence on insanity
    and can construe that evidence in a manner different
    from the parties’ assertions. . . . It is the trier of fact’s
    function to consider, sift and weigh all the evidence
    including a determination as to whether any opinions
    given concerning the defendant’s sanity were undercut
    or attenuated under all the circumstances.’’ (Citation
    omitted; internal quotation marks omitted.) Id., 211.
    The trier of fact ‘‘is not bound to accept a defense
    expert’s opinion on insanity,’’ even when the expert
    testimony adduced at trial is conflicting or ‘‘the state
    has presented no rebuttal expert.’’ Id., 210; see also
    State v. Quinet, 
    253 Conn. 392
    , 407, 
    752 A.2d 490
     (2000)
    (‘‘[t]he evaluation of [conflicting testimony] on the issue
    of legal insanity is the province of the finder of fact’’
    (internal quotation marks omitted)). ‘‘The credibility of
    expert witnesses and the weight to be given to their
    testimony . . . on the issue of sanity [are] determined
    by the trier of fact. . . . [I]n its consideration of the
    testimony of an expert witness, the [trier of fact] might
    weigh, as it sees fit, the expert’s expertise, his opportu-
    nity to observe the defendant and to form an opinion,
    and his thoroughness. It might consider also the reason-
    ableness of his judgments about the underlying facts
    and of the conclusions [that] he drew from them.’’ (Cita-
    tion omitted; internal quotation marks omitted.) State
    v. Weathers, supra, 
    339 Conn. 210
    –11.
    There are limits, however, on the permissible use of
    expert testimony. As we explained in Weathers, ‘‘[t]he
    trier’s freedom to discount or reject expert testimony
    does not . . . allow it to arbitrarily disregard, disbe-
    lieve or reject an expert’s testimony in the first instance.
    . . . [When] the [trier] rejects the testimony of [an]
    . . . expert, there must be some basis in the record to
    support the conclusion that the evidence of the [expert
    witness] is unworthy of belief.’’ (Emphasis in original;
    internal quotation marks omitted.) 
    Id., 211
    –12. That
    said, ‘‘given the myriad bases on which the trier properly
    may reject expert testimony and the reviewing court’s
    obligation to construe all of the evidence in the light
    most favorable to sustaining the trier’s verdict, it would
    be the rare case in which the reviewing court could
    conclude that the trier’s rejection of the expert testi-
    mony was arbitrary.’’ 
    Id., 212
    –13.
    In the present case, after carefully reviewing the evi-
    dence adduced at trial in the light most favorable to
    sustaining the court’s verdict, we conclude that the
    court did not arbitrarily reject Amble’s expert testi-
    mony. Amble’s expert opinion directly conflicted with
    the state’s expert’s opinion. The psychiatrist called by
    the state, Lewis, testified that, at the time the defendant
    committed the murders, she was not suffering from a
    mental disease or defect, was able to appreciate the
    wrongfulness of her conduct, and was able to conform
    her conduct to the requirements of the law. Lewis
    opined that the defendant’s self-reported version of
    events—that she had drowned D and A while in the grip
    of a psychotic, religious delusion—was unsupported
    and contradicted by numerous other facts, including
    the defendant’s prior psychiatric history and her behav-
    ior and communications during the critical time period
    from May 27 to June 2, 2015. Lewis described the defen-
    dant’s behavior and communications during this time
    as ‘‘organized . . . and focused on the earthly.’’ For
    example, the defendant’s online activity, such as her
    Internet searches on how to poison her children and
    her purchasing and printing a ‘‘Click-N-Ship’’ label to
    mail a letter to Santiago, reflected ‘‘organized thought’’
    and ‘‘multistep’’ planning inconsistent with psychotic
    behavior. Lewis described the defendant’s suicide note
    as ‘‘well typed,’’ ‘‘organized,’’ ‘‘linear,’’ ‘‘coherent’’, ‘‘goal
    directed,’’ and ‘‘stunning[ly]’’ devoid of any ‘‘mention
    of baptism.’’ Similarly, the defendant’s text messages
    to her family, coworkers and friends were not ‘‘overtly
    psychotic’’ and did not mention God or baptism.
    According to Lewis, the manner in which the defen-
    dant committed the murders also was inconsistent with
    her alleged religious delusion. Lewis pointed out that
    ‘‘it’s not consistent to sedate people to be baptized’’ and
    that, because the defendant herself was not baptized,
    it was ‘‘internally discordant’’ to baptize D and A in
    order ‘‘to be with [them]’’ in death. Additionally, in
    Lewis’ view, the defendant’s statement in her suicide
    note, ‘‘if I burn for eternity at least I’ll know why I
    deserved it,’’ was inconsistent with a religious delusion
    because God would not ‘‘burn someone for eternity
    who saved her children’s souls . . . .’’ Lewis also testi-
    fied that the defendant’s text message to her mother,
    ‘‘I love you and I’m sorry,’’ was inconsistent with a fixed
    religious delusion because, ‘‘why would [the defendant]
    be sorry for having [her] children go to heaven?’’ Lewis
    opined that these communications not only were incon-
    sistent with a religious delusion but affirmatively reflected
    the defendant’s ‘‘[a]ppreciation of [the] wrongfulness’’
    of her actions.
    Given the directly conflicting expert testimony, the
    trier of fact was free to credit Lewis’ expert opinion
    and to reject Amble’s expert opinion. For better or
    worse, the success of much litigation, in both criminal
    and civil cases, depends on the credibility and effect
    of expert testimony on the trier of fact. We repeatedly
    have observed that, ‘‘[w]hen experts’ opinions conflict
    . . . [i]t is the province of the [trier of fact] to weigh
    the evidence and determine the credibility and the effect
    of testimony . . . . [T]he [fact finder] is free to accept
    or reject each expert’s opinion in whole or in part.’’
    (Internal quotation marks omitted.) Grondin v. Curi,
    
    262 Conn. 637
    , 657 n.20, 
    817 A.2d 61
     (2003). In the
    present case, the expert opinions regarding the defen-
    dant’s sanity at the time of the commission of the mur-
    ders were conflicting, and it was up to the court to
    determine which expert opinion, if either, it credited.
    Even if we set the conflicting expert testimony aside,
    Amble’s expert opinion was undermined by the other
    evidence adduced at trial. The defendant’s sister, best
    friend, oldest son, and daycare provider all testified
    that they had communicated and/or interacted with the
    defendant in the days immediately before or after the
    murders and that the defendant exhibited no symptoms
    of psychosis or religious delusion. See State v. Weath-
    ers, supra, 
    339 Conn. 217
    –18 (recognizing that defen-
    dant’s ‘‘conduct and demeanor shortly before or after
    the crime are relevant, and no doubt necessary, to mak-
    ing [an insanity] determination’’ and ‘‘may be more
    indicative of actual mental health at [the] time of the
    crime than mental exams conducted weeks or months
    later’’ (internal quotation marks omitted)). Similarly,
    the data extracted from the defendant’s cell phone,
    which included her contemporaneous text messages
    and Internet searches, did not exhibit a preoccupation
    with or focus on the divine. The autopsy reports and
    the testimony of the state’s medical examiner, which
    established that the causes of death of D and A were
    not drowning, as the defendant had reported, but acute
    drug and/or alcohol intoxication, also were inconsistent
    with Amble’s expert opinion that the defendant had
    drowned her children while in the midst of a religious
    delusion.
    The trial court also was entitled to find that the state
    effectively had undermined Amble’s testimony on cross-
    examination. See, e.g., State v. Cobb, 
    251 Conn. 285
    ,
    490, 
    743 A.2d 1
     (1999) (‘‘the state can weaken the force
    of the defendant’s presentation by cross-examination
    and by pointing to inconsistencies in the evidence’’
    (internal quotation marks omitted)), cert. denied, 
    531 U.S. 841
    , 
    121 S. Ct. 106
    , 
    148 L. Ed. 2d 64
     (2000). On cross-
    examination, Amble could not explain to the court’s
    satisfaction why the defendant would text her mother
    that she did not ‘‘want or deserve a service’’ if she was
    ‘‘utterly convinced that this was God’s plan.’’ Amble
    also had significant difficulty explaining the statement
    in the defendant’s suicide note about burning for eter-
    nity, admitting that, if the defendant genuinely believed
    that she ‘‘was carrying out God’s plan,’’ then she
    ‘‘wouldn’t, at least in her [own] mind,’’ burn for eternity.
    Additionally, Amble admitted that there was no evi-
    dence to corroborate the defendant’s self-reported
    symptoms of psychosis prior to the murders and that
    the trauma of killing her own children and remaining
    in the home by herself for days with their decomposing
    bodies could have induced the defendant’s subsequent
    psychosis. See footnote 13 of this opinion.
    In a case involving conflicting evidence, ‘‘it is the
    quintessential [fact finder] function to reject or accept
    certain evidence, and to believe or disbelieve any expert
    testimony.’’ (Internal quotation marks omitted.) State
    v. Crespo, 
    246 Conn. 665
    , 679, 
    718 A.2d 925
     (1998), cert.
    denied, 
    525 U.S. 1125
    , 
    119 S. Ct. 911
    , 
    142 L. Ed. 2d 909
    (1999). On the present factual record, ‘‘[t]he [fact finder]
    was free to reject, in whole or in part, the expert defense
    testimony, and to credit the state’s [expert testimony]
    . . . .’’ State v. Medina, 
    228 Conn. 281
    , 310, 
    636 A.2d 351
     (1994); see also State v. DeJesus, 
    236 Conn. 189
    ,
    201, 
    672 A.2d 488
     (1996) (‘‘[i]t is well settled that the
    trier of fact can disbelieve any or all of the evidence
    proffered concerning the defense of insanity, including
    expert testimony, and can construe such evidence in a
    manner different from the parties’ assertions’’); State
    v. Gray, 
    221 Conn. 713
    , 720, 
    607 A.2d 391
     (‘‘[i]n finding
    facts in cases of conflicting expert testimony, a [fact
    finder] may choose to believe one expert over another’’),
    cert. denied, 
    506 U.S. 872
    , 
    113 S. Ct. 207
    , 
    121 L. Ed. 2d 148
     (1992). In light of the foregoing evidence, we
    conclude that the court reasonably rejected the defen-
    dant’s insanity defense.
    The defendant contends that no rational fact finder
    could have credited Lewis’ expert testimony and
    rejected Amble’s expert testimony because Lewis
    reviewed the same materials as Amble but conducted
    fewer collateral interviews and spent less time inter-
    viewing the defendant.15 This claim is without merit. It
    is axiomatic that ‘‘[t]he credibility of expert witnesses
    and the weight to be given to their testimony . . . on
    the issue of sanity is determined by the trier of fact.’’
    (Internal quotation marks omitted.) State v. Medina,
    supra, 
    228 Conn. 309
    . ‘‘We will not . . . substitute our
    judgment for that of the fact finder with respect to the
    weight to be given the testimony of the expert . . .
    witnesses on the issue of the defendant’s sanity.’’ State
    v. Patterson, 
    229 Conn. 328
    , 340, 
    641 A.2d 123
     (1994).
    As we previously explained, the trier of fact reasonably
    credited Lewis’ expert testimony that, at the time the
    defendant murdered D and A, she was not suffering
    from a mental disease or defect, was able to appreciate
    the wrongfulness of her conduct, and was able to con-
    form her conduct to the requirements of law. Accord-
    ingly, we affirm the judgment of conviction.
    The judgment is affirmed.
    In this opinion the other justices concurred.
    * In accordance with our policy of protecting the privacy interests of the
    victims of family violence, we decline to identify the victims or others
    through whom the victims’ identities may be ascertained. See General Stat-
    utes § 54-86e.
    ** September 13, 2021, the date that this decision was released as a slip
    opinion, is the operative date for all substantive and procedural purposes.
    1
    General Statutes § 53a-13 (a) provides that, ‘‘[i]n any prosecution for an
    offense, it shall be an affirmative defense that the defendant, at the time
    the defendant committed the proscribed act or acts, lacked substantial
    capacity, as a result of mental disease or defect, either to appreciate the
    wrongfulness of his conduct or to control his conduct within the require-
    ments of the law.’’
    2
    M is the defendant’s ex-husband and the father of D and A.
    3
    J is M’s daughter from a prior relationship.
    4
    D.W. is the defendant’s son from a prior relationship. D.W. was seventeen
    years old and living with his father at the time of the murders.
    5
    N is the defendant’s daughter from a prior relationship. The defendant’s
    parental rights to N were terminated in 2008. N was thirteen years old and
    in the custody of the Department of Children and Families at the time of
    the murders.
    6
    D.J. is the defendant’s son from a prior relationship. The defendant’s
    parental rights to D.J. were terminated in 2008. D.J. was ten years old and
    had been adopted by his foster family at the time of the murders.
    7
    Many of defendant’s text messages during the relevant time period were
    delayed or deleted, and, as a result, the ‘‘date and time on such messages
    are likely when they were placed in [a temporary file pending future action]
    and not when they were actually created.’’ (Internal quotation marks omit-
    ted.)
    8
    Alternatively, the defendant raised the affirmative defense of extreme
    emotional disturbance pursuant to General Statutes §§ 53a-54a (a) and 53a-
    55 (a) (2). The trial court rejected this defense, finding that ‘‘the defendant
    . . . failed to prove by a preponderance of the evidence that she caused
    the death of her children while under the influence of an extreme emotional
    disturbance, for which there was a reasonable explanation or excuse mea-
    sured from the view point of a reasonable person in the defendant’s situation
    under the circumstances as she believed them to be.’’ The defendant does
    not challenge this finding on appeal.
    9
    These conflicts and stressors included (1) a physical altercation with M,
    which led to the defendant’s arrest, (2) the arrest of the defendant’s oldest
    son, D.W., (3) the diagnosis of the defendant’s youngest son, D, ‘‘as a ‘special
    needs child,’ ’’ (4) the loss of a babysitter ‘‘loved’’ by D and A, (5) the
    placement of the defendant’s oldest daughter, N, for adoption, (6) the ‘‘recent
    loss of a relationship,’’ and (7) the defendant’s upcoming thirty-sixth birthday
    and her feeling that ‘‘she had not had any significant or meaningful accom-
    plishments.’’
    10
    At trial, Amble testified that, in his opinion, the defendant had developed
    schizoaffective disorder ‘‘in the days or so before she took her children’s
    [lives],’’ which had persisted up to and including the time of trial. In his
    first written report, however, Amble expressed his opinion that, although he
    did not disagree with a diagnosis of schizoaffective disorder, the defendant’s
    symptoms at the time of the murders also were ‘‘consistent with a [m]ajor
    [d]epression with [p]sychotic [f]eatures.’’ Amble based ‘‘[t]his assessment
    . . . on the defendant’s symptoms at the time of the . . . offense including
    a depressed mood, anhedonia, hopelessness, insomnia, and persistent sui-
    cidal ideation.’’
    11
    Amble explained that, when the defendant woke up following her suicide
    attempt and realized she had not died, she started ‘‘questioning what in the
    heck is going on here. . . . I have followed God’s plan. This is what I was
    supposed to do, and suddenly she is now not dead, and she can’t believe
    it, that she’s not dead, and wonders at some point whether she even heard
    this message right to begin with.’’
    12
    In her written report, Lewis defined a ‘‘[p]ersonality [d]isorder [as]
    a pervasive and enduring pattern of behavior that differs markedly from
    expectations of an individual’s culture and includes difficulties in ways of
    perceiving self/others or events, range/intensity/lability/appropriateness of
    emotional response; interpersonal functioning, and impulse control. These
    difficulties occur across a broad range of personal and social situations.
    There is significant impairment.’’
    13
    In her written report, Lewis stated: ‘‘People diagnosed with [m]ixed
    [p]ersonality [d]isorder with [b]orderline [f]eatures can decompensate under
    stress and have psychotic symptoms. It is my opinion that, following her
    arrests, [the defendant] had a several day period [during which] she was
    shocked and traumatized [by] what had occurred. She exhibited signs of
    complex bereavement including hearing her child’s voice, paranoid ideation,
    and numbness. She did not have these symptoms before the alleged offense.
    It is my opinion that symptoms resulted from the trauma of killing her
    children and the consequences of so doing.’’
    14
    The defendant appealed directly to this court pursuant to General Stat-
    utes § 51-199 (b) (3).
    15
    The defendant also argues that the court arbitrarily rejected Amble’s
    expert testimony, in pertinent part, because (1) it focused ‘‘myopically’’ on
    a single sentence in the defendant’s suicide note, ‘‘if I burn for eternity at
    least I’ll know why I deserve it,’’ divorced from ‘‘the context of the entire
    letter,’’ (2) the defendant’s statement about burning for eternity reflected
    her ‘‘acknowledgment that her actions are objectively wrought with societal
    disapproval for a criminal act’’ but do not reflect her ‘‘appreciation for the
    wrongfulness of her conduct,’’ (3) Amble’s expert opinion was supported
    by the defendant’s psychiatric records at YPI and YCI, as well as Carvalho’s
    testimony, (4) Amble ‘‘repeatedly and consistently’’ explained that an individ-
    ual experiencing a psychotic delusion does not lose ‘‘ ‘cognitive function-
    ing’ ’’ and can continue with ‘‘ ‘goal directed behavior toward rational
    things’ ’’ independent of the psychotic delusion, (5) it improperly focused
    on Amble’s failure to investigate unanswered questions, such as why the
    defendant’s children would be afraid of baptism and in need of medication to
    participate, even though Amble testified that the answers to those questions
    would not change his expert opinion, and (6) it incorrectly concluded that
    the timing of the defendant’s disclosure to Amble about hearing the voice
    of God adversely impacted the credibility and reliability of his opinion. We
    reject each of these arguments for the following, respective reasons: (1)
    the court’s memorandum of decision reflects that the court considered the
    entirety of the defendant’s suicide note, which was devoid of any mention
    of baptism and included an ‘‘impassioned and remonstrating’’ ‘‘diatribe’’
    against M, (2) the defendant’s statement about burning for eternity patently
    refers to God’s eternal judgment for a wrongful and immoral act rather than
    societal disapprobation of criminal conduct, (3) the defendant’s psychiatric
    records at YPI and YCI, as well as Carvalho’s testimony, do not address the
    defendant’s psychiatric condition at the time of her commission of the
    murders, (4) the court was entitled to disbelieve Amble’s testimony that
    the defendant’s contemporaneous text messages were independent of her
    religious delusion and to believe Lewis’ expert testimony that they were
    inconsistent with the existence of a religious delusion, (5) although the
    answers to the court’s questions would not have affected Amble’s expert
    opinion, they were critical to Lewis’ expert opinion and, therefore, entitled
    to be weighed by the court in making its credibility determination, and (6)
    despite the existence of evidence indicating that the defendant heard the
    voice of God after her commission of the murders, there was no evidence,
    until October, 2018, on the eve of trial, that she heard the voice of God
    prior to her commission of the murders, which Amble himself admitted
    was a ‘‘significant omission . . . .’’
    

Document Info

Docket Number: SC20351

Filed Date: 1/4/2022

Precedential Status: Precedential

Modified Date: 1/13/2022