Aleesha Louise Gilmore faced the West Australian Supreme Court on Monday, where she was fined $500 for breaching the conditions of a suspended sentence.
The 24-year-old triggered the breach by driving her car in April, five months after her licence was suspended for drink driving.
Gilmore faced a trial in 2025 with her ex-boyfriend Jack Steven James Brearley and his mates - Brodie Lee Palmer and Mitchell Colin Forth - for the murder of Cassius Turvey.
The 15-year-old Noongar Yamatji boy was brutally attacked in Perth's eastern suburbs on October 13, 2022.
He died in hospital 10 days later.
Brearley and Palmer were convicted of murder and sentenced to life behind bars, and Forth was found guilty of manslaughter and sentenced to 12 years' imprisonment.
Cassius was with fellow students when Brearley, Forth and Palmer intercepted and chased them into bushland.
Cassius was knocked to the ground and hit in the head with a metal pole at least twice, the impact splitting his ear in half and causing bleeding in his brain.
Gilmore was acquitted of the murder charge but convicted of abducting and assaulting other teenagers in the days before Cassius was assaulted.
Chief Justice Peter Quinlan imposed a suspended 15-month prison sentence for the crimes, which was suspended for two years with strict conditions including supervision and a curfew.
Gilmore had already served two-and-a-half years on remand.
Her driving offence could have activated the suspended sentence but Justice Quinlan on Monday said it would be unjust to impose it and not in the community's interest to do so.
"You know you are able to work well and behave well when you put your mind to it," he told her.
"And you need to put your mind to it so you do not get brought back before me again."
The court was told Gilmore had complied with the other orders linked to her release and had struggled to get work due to her criminal record.
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