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.