Adrian Torrens’ ex-wife Michelle said “something was very off” with Torrens the night 19-year-old Audrey Griffin was horrifically murdered after walking home from a night out with friends on the NSW Central Coast.

“Something was very off that night … he was so aggressive,” Michelle told 60 Minutes reporter Dimity Clancey.

Michelle said she had been “living in fear” for the past year and always “looking over her shoulder”.

“On the night of Audrey’s death, he called me 12 times and left voice messages and all of them threatening to kill me,” she said.

When asked if she believed that Torrens was on her way to kill her the night of Ms Griffin’s murder, Michelle said: “I think so.”

She said she had “no idea” about Torrens’ true nature when she married him.

“I would never know if he was just like trying to intimidate me or call my bluff or whatever,” Michelle said.

Ms Griffin left the Hotel Gosford in the early hours of Sunday March 23, telling her friends she was going to get an Uber or a cab back to her dad’s house.

However, the next morning when Ms Griffin’s mum checked her daughter’s location on her phone, she knew something was wrong.

Ms Griffin’s best friend tragically found her body partially submerged in Erina Creek the next morning while attempting to locate her.

Police initially declared that Ms Griffin’s death was not suspicious, as an autopsy led them to quickly to rule the teen’s death an accidental drowning.

However Ms Griffin’s mother, Kathleen Kirby, told A Current Affair this did not make sense to her.

“My gut was telling me one thing, and it was not to give up. I couldn’t just go with she drowned. Not one person has walked up to me and said she drowned … No one believed it,” she said.

“She was a swimmer, she’s an ocean swimmer, she was strong.”

Nearly a month later, police revealed a man had been charged with her murder.

That man, Adrian Torrens, was found unresponsive in a cell at Silverwater Correctional Complex in Western Sydney at about 4.50pm on Thursday April 24 after taking his own life. He was unable to be revived by Corrective Services staff and paramedics.

Torrens also faced 11 unrelated domestic violence charges, including using a mobile phone in a harassing or menacing manner and 10 counts of breaching an apprehended violence order.

Michelle spoke about Torrens’ violent history, saying: “He would just flip … I could never see it coming.”

Michelle also shared she felt let down by the legal system, after they failed to lock Torrens away despite numerous domestic violence offences.

“It is awful … you know this morning I got up and I saw the sunrise, and I thought that, that it is something that Audrey will never have the luxury of. Just the simple things in life,” she said.

Meanwhile, Kathleen and Trevor told Dimity Clancey that the thought of what Audrey went through keeps them awake at night.

“For me right now … is just knowing what she was going through,” Kathleen said.

“What were her last thoughts? Knowing she fought him.

“She was fighting for her life … imagine fighting for your life.”

The Sydney Morning Herald reported Torrens was spared jail two months earlier and was on bail at the time of Ms Griffin’s death.

“They should have put him in jail after breaching his second AVO,” Michelle said.