Shane and Danielle Lambert are suing McLean Hospital for their children’s Massachusetts wrongful deaths. Kaleigh, 5, and Shane, 4, died on January 11, 2008, when their aunt, Marcelle Thibault, carried them onto Interstate 495 where the three of them were fatally struck by two motor vehicles.
Thibault, who is Danielle’s identical twin, was mentally ill. She had received treatment for her condition at McLean Hospital. Psychiatrists at the Harvard-affiliated psychiatric facility had diagnosed the 39-year-old with bipolar disorder in 2007. After discharging her from the Belmont hospital they recommended outpatient therapy and prescribed psychotropic drugs. However, the Lamberts claim that McLean’s doctors failed to warn them that Marcelle might be a danger to herself and those close to her.
On the night of the tragic incident, four months after she was discharged from the mental hospital, Thibault arrived at the Lamberts home to pick up the kids for a sleepover. Earlier in the evening, Massachusetts State Police almost detained her for a psychiatric evaluation. She reportedly was behaving strangely on an I-495 median and she even hit a motorist who tried to help her.