Florida ? Former astronaut Lisa Nowak is pursuing a temporary insanity defense on charges that she assaulted and tried to kidnap a romantic rival, according to a court document released Tuesday.

Nowak suffered from major depression, obsessive-compulsive disorder, insomnia and “brief psychotic disorder with marked stressors,” defense attorney Donald Lykkebak wrote in his notice of intent to rely on the insanity defense.

He also noted that the already petite Nowak recently lost 15 percent of her body weight and struggled with “marital separation.”

Nowak, 44, was arrested in February after confronting Colleen Shipman, the girlfriend of a former space shuttle pilot Nowak had been seeing. The former astronaut allegedly stalked Shipman at the Orlando airport, then attacked her as Shipman arrived at her car.