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Lindsay Clancy pleaded for her trial to stop as a medical examiner shared the horrific details of her slain children's injuries.

The former nurse, 36, is accused of murdering Cora, five, Dawson, three, and eight-month-old Callan, at her home in Duxbury, Massachusetts, in January 2023.

Clancy's suicide attempt after the three killings failed but left her paralyzed and in a wheelchair for life.

She has pleaded not guilty to murder charges and claimed she is not responsible for her actions because she was suffering from postpartum psychosis after being prescribed a powerful cocktail of drugs to cope with depression.

The jury and courtroom had to be cleared twice on Wednesday as Clancy grew so overcome with emotion hearing the injuries she had inflicted on her own children.

'I can't do this,' Clancy cried out as she sat through the graphic testimony inside Plymouth County Superior Court.

Dr Barbara Olson described the neck trauma and injuries to Cora's arms and legs, and said that Dawson died of asphyxia after Clancy strangled the children with exercise bands. Clancy put her head down on the defense table and sobbed.

The mom-of-three's tears came even before the graphic photos from Cora and Dawson’s autopsies were shown to the jury.

Lindsay Clancy cried out, 'I can't do this,' as a medical examiner testified about her children's injuries at Plymouth Superior Court, Massachusetts, on Wednesday

Clancy strangled her children - Cora, five, Dawson, three, and eight-month-old Callan - back in January 2023, then attempted to kill herself

Renee Stonebridge, who works at the Massachusetts Office of the Chief Medical Examiner, had first testified about the injuries to the children's eyes and brains.

Clancy appeared to be hyperventilating as Stonebridge spoke, and made quiet gulping sounds while her back and shoulders shuddered.

Her attorney, Kevin Reddington, leaned forward and clutched her hand in his.

As the judge called a break, Reddington stood over Clancy with his arm around her shoulder. She leaned her body into his as she appeared to be desperately trying to muffle her sobs.

When the jury left the room, she broke down into loud cries.

The court returned around 15 minutes later, with several jurors stealing glances over in Clancy’s direction.

The judge reminded them that the evidence can give emotional reactions - but, as jurors, they must separate emotion from the evidence.

'Your verdict in this case is going to have to be based solely on the evidence. It cannot be based on sympathy or anger or passion or prejudice,' he said.

When the grueling testimony continued, Clancy broke down even more uncontrollably, wailing those four words to the court: ‘I can’t do this.’

Her tearful outburst prompted the judge to quickly clear the room for the second time - something that appeared to rattle the prosecution.

Prosecutors Jennifer Sprague and Shanan Buckingham turned to each other and pulled faces - seemingly annoyed - as Clancy was comforted and taken out of the room by her nurses.

When jurors returned once again, they were faced with the graphic images of Cora and Dawson.

The former nurse, 36, is accused of murdering her three children. Her suicide attempt after the killings failed but left her paralyzed and in a wheelchair for life

Renee Stonebridge, who works at the Massachusetts Office of the Chief Medical Examiner, testified about the injuries to the children's eyes and brains

While the little children’s bodies were shown on screens, one female juror grew increasingly upset.

She wiped away tears with a tissue before closing her eyes for a moment. The woman then pursed her lips and swallowed, as though trying to stop the tears flowing.

Another juror also briefly dabbed a tissue to her face. Clancy put her head in her arms on the defense table and cried loudly.

Reddington objected to the witnesses before they were brought to the stand.

'It's not contested, it's not necessary,' Reddington said.

Last week, Clancy, who does not deny killing her children, agreed to a stipulation of facts in regard to several pieces of evidence and to help alleviate the government from having to call dozens of witnesses.

If you or someone you know needs help, please call or text the confidential 24/7 Suicide & Crisis Lifeline in the US on 988. There is also an online chat available at 988lifeline.org.