As Margaret Cunneen SC lost a legal battle against the ICAC, the "very poor" driving record of her son's girlfriend surfaced in another Sydney court.
Top NSW prosecutor Margaret Cunneen has been granted a delay from fronting the ICAC as she continues her push to shut its public inquiry down.
Meanwhile, the girlfriend at the heart of the corruption watchdog's probe into the silk has faced a Sydney court for unrelated traffic offences.
Ms Cunneen, her son Stephen Wyllie and his girlfriend Sophie Tilley were set to face the ICAC this week to answer allegations surrounding a car crash in May.
The probe was poised to grill the trio about claims Ms Cunneen perverted the course of justice by allegedly advising Ms Tilley to fake chest pains at a car crash scene so police could not obtain her blood alcohol level.
Following the announcement of the public hearing, Ms Cunneen launched urgent legal action to shut it down, arguing the ICAC was going beyond its jurisdiction.
Ms Cunneen's legal team argued in the Supreme Court that any allegations raised against the deputy senior crown prosecutor occurred in her private life and not during her work as a public official.
They also submitted the accusations went no higher than an interference with a police investigation and did not constitute perverting the course of justice.
But Justice Clifton Hoeben rejected their bid on Monday, sparking an immediate move by Ms Cunneen's barrister, Arthur Moses SC, to launch an appeal, which will be heard on November 18.
In a brief hearing late on Monday afternoon, ICAC barrister Jeremy Kirk SC said the commission would hold off the inquiry until the appeal was determined.
He said hearings would be held "after the end of November", if the court permitted.
"There is significant public interest in the prompt resolution of this matter," Mr Kirk said.
The hearing came just hours after Ms Tilley fronted Downing Centre Local Court, where she was suspended from driving for two months and fined more than $600 over unrelated traffic offences.
The court heard the 25-year-old had been caught driving 100km/h in a 80km/h zone while travelling to see her mother during the Easter long weekend.
Then in July, the executive sales assistant for a Double Bay real estate agency was snapped running a red light in Sydney's east.
Magistrate Lisa Stapleton said Ms Tilley had accrued five offences since renewing her L-plates in 2013, including driving while unaccompanied.
"She has a limited history and it is very poor," she said.