Almost seven years after Lynette Daley bled to death on a remote NSW beach after a violent sexual assault, her "callously indifferent" boyfriend has been jailed for at least 14 years and three months.
Ms Daley, 33, died from injuries sustained from "wild sex" with Adrian Attwater, 43, and his friend, Paul Maris, 47, on a drunken 2011 Australia Day camping trip to Ten Mile Beach near Iluka.
A jury in September found Attwater guilty of manslaughter and aggravated sexual assault, and Maris guilty of aggravated sexual assault and hindering the discovery of evidence.
In the NSW Supreme Court at Coffs Harbour on Friday, Justice Elizabeth Fullerton sentenced Attwater to 19 years in jail with a non-parole period of 14 years and three months.
"His attitude towards Ms Daley at the time of his offending was one of callous indifference," she said.
The judge said Ms Daley was likely already dead when Attwater started CPR hours after the sexual assault.
On a recorded triple-zero call he is heard saying: "What a good f***ing Australia Day, f*** sake, f***ing hell you bloody bitch."
Maris was sentenced to nine years' jail with a non-parole period of six years and nine months.
The five-week trial heard the trio had been drinking heavily and driving up and down the beach in Maris' troop carrier.
At one point, Attwater and a blind drunk Ms Daley got on a mattress in the back of the vehicle where he "repeatedly and vigorously" sexually assaulted her, the trial heard.
Maris joined in a sex act, at Attwater's invitation, which the pair claimed was consensual.
Attwater only stopped the assault when he noticed blood on his hand.
The court heard the extensive injuries to Ms Daley caused significant blood loss that would have led to hypovolemic shock and death.
Instead of seeking medical help, Attwater dragged her into the ocean to try to wash the blood off her body, while Maris burnt Ms Daley's clothing and the bloodstained mattress.
Attwater claimed she'd had a fit or seizure in the ocean when she went for a swim, but Justice Fullerton found Attwater deliberately lied to police.
"Mr Attwater knew that he was responsible for Ms Daley's death and ... his claim that she had suffered a sudden seizure in the ocean was a lie deliberately told to conceal that fact," she said.
She found both men had a "persisting lack of insight" into their offending and "lack of remorse".
Justice Fullerton also criticised the DPP, saying there was still no explanation for the delay in prosecuting the men.
Attwater and Maris were initially charged over Ms Daley's death but in 2012 the DPP decided not to proceed with their prosecution and again declined to recommence proceedings in 2015.
The men eventually went to trial in 2017 and it took a jury just 32 minutes to find them guilty.
NSW Director of Public Prosecutions Lloyd Babb and NSW Attorney-General Mark Speakman made separate apologies to Ms Daley's family after the sentencing.
"I sincerely regret my office's involvement in the delay," Mr Babb said in a statement on Friday.
Mr Speakman said: "Ms Daley and her family deserved better, and for that I am sorry."