//My partner is on a suspended sentence already...//
Ah, that's different.
There is a general expectation (not always followed, I know) that suspended sentences will be activated if the offender commits another offence. This is especially so if the later offence is of a similar nature to the one which attracted the suspended sentence. Defendants are warned of this at the time of sentencing.
Committing an offence when the defendant has a history of violence and whilst on a suspended sentence considerably aggravates it. I think your partner needs to prepare for the worst. That said, stranger things have happened.