HUDSON, Wis. – Aaron Schaffhausen couldn't explain what triggered him to choke his youngest daughter and end up killing all three of his girls, he told a mental health expert, according to testimony Monday in Schaffhausen's insanity trial.
Schaffhausen said he went to visit his three daughters in their River Falls home, went upstairs to look at their toys after talking to the baby sitter, gave them money to put in their piggy banks and talked with them about going to a park, according to the psychiatrist's testimony.
But when he was helping 5-year-old Cecilia look for her lost shoes, "the next thing he knew he had her neck in his hands and he was strangling her," Dr. Ralph Baker testified that Schaffhausen said.
Baker concluded after a 3½-hour interview in February with Schaffhausen that the defendant was not legally insane at the time of the crimes.
Schaffhausen pleaded guilty to the July killings of his daughters, 11-year-old Amara, 8-year-old Sophie and Cecilia. His defense attorneys are trying to prove that he suffered from a mental disease or defect and should be sent to a mental institution instead of prison.
Schaffhausen was cooperative and friendly during the interview, Baker said, but at one point slowed his voice when talking about the day of the crimes and said tearfully it was "a spur of the moment thing," Baker testified. Baker's testimony offered jurors a glimpse of Schaffhausen's recounting of the crime.
Baker testified that Schaffhausen described the scenario with some details:
He thought Cecilia was dead after the strangling. Amara and Sophie came in from outside and he heard Cecilia crying. He got a knife from the kitchen and slit all three girls' throats.