A woman in Ottawa who's on trial for stabbing her boyfriend after a Keith Urban concert claims she has no memory of either the crime, or the events directly before and after it took place.

25-year-old bar manager Ashley White has pleaded not guilty to charges of attempted murder in the stabbing of Patrick Halcro, a 36-year-old Afghan war veteran with whom she had a mostly long-distance six-month relationship. The charges stem from an incident that took place on July 17, 2010, when the couple fought after attending a Keith Urban concert at Bluesfest.

White says Halcro had been drinking heavily and became increasingly annoyed at comments she and other women at the show made about Urban's good looks. White admits that she had also been drinking, and during the cab ride home, the couple fought about Halcro's occasional jealous rages, while he taunted her about texts he said he had sent to other women. She decided to end the relationship that night.

“It wasn’t a healthy relationship and I didn’t want to be in it,” she said in court on Wednesday (April 17), according to the Ottawa Citizen. White testified that when they arrived home, she told him to pack his belongings and leave, but claims he tried to delay by looking for a shirt he had given her.

“I told him to ‘get the f--- out’ and the next thing I knew I was on the floor," White testified. "I fell backwards and smacked back my head on the floor.” She further alleged that Halcro continued to beat her while she crawled to the phone to dial 911. “He said, ‘I’m trained to kill and will kill you’, or words to that effect,” she said in court..

White claims to have no memory of what happened next, but according to witnesses, she screamed, ‘Look what he’s done to my face’ after seeing her broken nose and bloodied face in the mirror -- then stabbed Halcro with a steak knife as he stood outside her apartment.

Previously in the trial, White testified that she was left psychologically and physically damaged by an earlier attack, and she's also been diagnosed with post-traumatic stress disorder (PTSD), post-concussion syndrome and depression related to the attacks that has driven her to seek counseling.

White's trial will continue on Thursday (April 18).