The jury could find her guilty of murder or the lesser crime of manslaughter, or it could acquit her if it finds that she wasn't in control of herself due to psychiatric problems.

While both sides agree she killed her children, Clancy's defense team argued she suffered from postpartum psychosis, with defense attorney Kevin Reddington stating that "lousy medical care" exacerbated her condition. Prosecutors argued she intentionally planned the killings and that the nation's healthcare system is "not on trial here."

Testimony concluded Wednesday in the murder trial of Lindsay Clancy, a mother accused of strangling her three young children in a case that has drawn attention to postpartum mental health. Closing arguments are expected to begin Thursday, before the jury begins deliberating.

Kirk Heilbrun told jurors that he didn't believe Clancy's claim that she hallucinated a voice telling her to kill her children, who ranged from 8 months to 5 years old. He said he instead believed she took their lives so they wouldn't "suffer" after she killed herself.

Kirk Heilbrun, who examined Clancy over three days this year, said he struggled to reach a diagnosis of bipolar 2 disorder "because of all the diagnoses in the records and all the symptoms that she experienced."

Clancy's lawyer, Kevin Reddington, hasn't disputed that she killed the children but says she should not be held criminally responsible because she had postpartum psychosis, a rare mental illness linked to the stress, sleep deprivation and hormonal changes that follow childbirth.