Both the prosecution and her defense attorney read pages from her journal Monday as she chronicled those difficult months. Lindsay Clancy wept at the defense table last week as Patrick Clancy and other witnesses testified. In the hospital two days later, when a forensic psychologist asked Clancy how she felt, she responded: “horrified.” He needed a ventilator at Boston Children’s Hospital to help him breathe, but did have a heartbeat. Prosecutor Shanan Buckingham sought in an opening statement last week to keep jurors’ focus on the defendant, not her doctors.