Former prison guard Sharon Yarnton, who is accused of trying to blow up her husband in the midst of their divorce, told a psychiatrist he "faked" his own attempted murder to cover up an affair, the NSW Supreme Court has heard.
Ms Yarnton, 50, is charged with the attempted murder of her husband Dean Yarnton, also a prison guard, along with alleged accomplices Monique Hayes, 25, and her husband Fady Houda, 24.
They have all pleaded not guilty.
Their NSW District Court trial, which was aborted last month due to the discovery of new evidence, heard Ms Yarnton allegedly drugged Mr Yarnton while they had drinks and dinner at the Merrylands bowling club, and he fell asleep in the car on the drive home.
Mr Yarnton told court he woke up at Picnic Point in the early hours of February 1, 2015, to find the car surrounded by petrol and an open gas bottle hissing in the back seat.
His wife had disappeared.
He said he saw a car driving away and immediately called his wife, who told him she was defecating in the bushes.
Ms Yarnton later told police she heard Mr Houda and Ms Hayes talking about ways to hurt Mr Yarnton, and she tried to discourage them, the trial heard.
Prosecutors have applied to the Supreme Court to have the women taken into custody before their new trial in June next year, airing Ms Yarnton's new version of events and details about the new evidence.
Crown prosecutor Guy Newton told Justice Michael Walton the psychiatrist's report meant Ms Yarnton had now given three versions of what happened that night.
"[She says] her husband faked the offence ... to escape his financial problems ... and cover up an affair." Mr Newton said.
"It's a further lie in the respect that the Crown would seek directions [from the future trial judge] as to lies and being capable of being used as evidence of guilt."
"[Sharon says] her husband faked the offence ... to escape his financial problems ... and cover up an affair."
Mr Newton said the Facebook message, which Ms Hayes allegedly sent to Ms Yarnton, mentioned winding down windows and opening the car's fuel tank.
There was no dispute at the trial that the windows were down and the fuel tank flap, which needed the ignition key, was open, Mr Newton said.
"[The Facebook message] reflects on the mindset of Ms Yarnton at the time ... and what she was prepared to do in a pre-meditated fashion.
"The Crown submission is that the case against Ms Yarnton is now overwhelming and that's not a submission I make lightly."
Ms Yarnton's barrister Michael Ainsworth said the Facebook message did not elevate the Crown case against Ms Yarnton, who had always complied with her bail conditions.
Justice Walton will rule on the detention application on Thursday afternoon.
The story, Prison guard Sharon Yarnton told doctor her husband 'faked' attempted murder, court, first appeared on the Sydney Morning Herald.