The Lindsay Clancy trial resumed in Plymouth Superior Court on Monday after a week of emotional testimony in the case of the Duxbury, Massachusetts, mother who admitted to killing her three children. The day started with doctors who treated Lindsay Clancy and her children on the night of the murders taking the stand, and finished with the jury hearing excerpts from her diary.Prosecutors allege that she made a calculated decision to strangle 5-year-old Cora, 3-year-old Dawson and 8-month-old Callan on Jan. 24, 2023. The defense says she was overmedicated and committed the killings during an episode of extreme postpartum psychosis.Lindsay Clancy's diary read in courtProsecutor Shanan Buckingham read aloud from Lindsay Clancy's diary, which police seized with a search warrant. Clancy wrote that she was obsessed with her infant son's sleep schedule."Hearing him cry for one-plus hours and not intervening just about killed me. I even said the words 'I want to die' to Pat while he was crying," Clancy wrote.Clancy also said she was "completely overwhelmed" trying to take care of her three kids."I feel like I'm drowning every day," she wrote.In an entry dated Nov. 18, 2022, Clancy wrote, "It's like I'm so desperate to get a mental break from taking care of everyone that my mind is trying to make something physically wrong with me."