India, Aug. 8 -- Rebecca Jollotta, a psychiatric mental health nurse practitioner who treated Lindsay Clancy before she killed her three children in Duxbury, Massachusetts, is expected to testify in Clancy's high-profile murder trial as the court examines her mental health treatment before the January 2023 deaths.

Clancy, 35, has pleaded not guilty to three murder charges in connection with the deaths of her children, 5-year-old Cora, 3-year-old Dawson and 8-month-old Callan, at their family home on January 24, 2023.

Her defense team has argued that Clancy was suffering from severe mental illness and postpartum psychosis at the time of the killings. Attorney Kevin Reddington has claimed that her declining mental health was not properly ...