Kayleigh Walker, from Hamilton Drive in East Challow near Wantage, was scheduled to stand trial at Oxford Crown Court on July 7.
She faces charges of actual bodily harm and unlawful wounding, both of which she denies.
The trial could not proceed as there were no prosecuting barristers available, according to the court.
Previously, Walker’s trial was set for September last year but experienced delays.
The allegations date back to 2019 and 2020, as presented in court.
A new trial date is scheduled for November 17 this year. Walker has been granted bail with the condition that she must not contact the alleged victim.
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