Mr Steedman believed the offender was a female.
"It is worrying for both her [23-year-old] and her family."
Online threats made to his client had been raised at her October 21 court appearance, he said.
At the time of the attack, the 23-year-old had been released to her home from hospital on temporary leave.
"Prior to this second admission, she was in hospital for four weeks. She's got a very complex medical presentation."
Mr Steedman was unaware whether any charges had been laid in relation to the assault.
His client's next scheduled court appearance on Tuesday would likely have to be delayed due to injuries from the assault, he said.