Murder victim Nicholas Dill's girlfriend denied being the one who caused his fatal injuries during cross-examination at Supreme Court yesterday.

Suggestions from defence lawyer John Perry QC are that Stacey Pike, 37, accidentally injured Mr. Dill, 43, after he caught her about to have sex with Andre Hypolite and "all hell broke loose."

However, she did admit that she accidentally killed a man with a knife in what she described as an accident 17 years ago.

During evidence for the prosecution on Wednesday, Ms Pike claimed Hypolite stabbed Mr. Dill in the back and chopped her in the head in their apartment on Boxing Day 2004.

She claimed Hypolite turned violent during a drug-fuelled sex session between the three of them, when Mr. Dill refused to perform a sex act on him.

Hypolite denies murdering Mr. Dill and wounding Ms Pike with intent to do her grievous bodily harm.

Yesterday, Ms Pike described how the defendant stood over her and Mr. Dill and screamed at them after the stabbing.

"He was standing there swaying, he had the knife in his hand, his eyes looked – he just wasn't Andre any more. The person that I could see just wasn't that nice person that I knew," she said.

Puisne Judge Charles-Etta Simmons prompted her: "You were about to say something about his eyes?"–Ms Pike replied: "I don't want to use the word 'crazed' but he wasn't there any more. He wasn't in his eyes any more. He wasn't cool, friendly Andre."–She went on to tell how Mr. Dill swung a pipe at Hypolite and missed, and she swung a machete at Hypolite and hit him in the chest.

Ms Pike told the jury she suffered cuts to both hands in the process of trying to pull Hypolite's knife away from him, and was treated afterwards for a large cut to her head and cuts to her chest.

She said Mr. Dill's brother – also called Andre – appeared at the window to their apartment and she shouted at him to call the Police.

Hypolite, she said, escaped through a broken window in the bedroom while she was trying to assist Mr. Dill, who was lying bleeding in the bathtub and having trouble breathing.

She described how, prior to Hypolite's exit, she dropped the machete but re-armed herself with a butcher's-style meat cleaver and a hammer from the kitchen because she was scared of him.

In answer to cross examination from Mr. Perry, Ms Pike agreed that in addition to crack cocaine, she also took half a tablet of ecstacy on the morning in question.

He put it to her that violence kicked off when her boyfriend left the room and came back in to find her and Hypolite about to have sex. She denied this.

"You picked up a knife during the struggle and you were the person who struck Nick in his back and Nick at that time was stomping and kicking the defendant while he was on the floor," Mr. Perry alleged.

"No sir," replied Ms Pike.

He continued: "The injury to Nick was caused by you. Now, I'm not suggesting, Ms Pike, that you intended to cause serious injury. This was a situation where all hell broke loose in that room. You, Ms Pike, you are not averse to using a knife are you?"

She replied: "It's happened before."

"You killed a man. Unlawfully killed a man," said Mr. Perry.

She responded that the death was an accident, telling him: "Somebody died at my hands because he was beating somebody else. I was defending somebody else" Ms Pike told the court she pleaded not guilty to murder after the event 17 years ago, but was convicted of manslaughter.

Going back to the events of Boxing Day 2004, she maintained that Hypolite struck her on the head, not Mr. Dill as the defence lawyer suggested.

She was unable to answer Mr. Perry's questions about the whereabouts of the butcher's cleaver she described during her evidence-in-chief. He pointed out that it was not visible in photographs of the crime scene taken later by the Police.

Ms Pike agreed she spent time in St. Brendan's psychiatric hospital – now the Mid-Atlantic Wellness Institute – both some time before and immediately after the incident.

However, she denied Mr. Perry's suggestion that she suffers from "a borderline personality disorder," maintaining that she has only ever been diagnosed with clinical depression.

The case continues.