I would say that if there was a situation where someone, hypothetically, had been assaulted and went to the police, charges would typically be laid at that point.
The peace bond regime tends to be for situations where there hasn't been an offence yet, but there's threatening conduct or coercive control issues that would lead a woman to think that she might be assaulted in the future, for example, or that her child might be harmed.
If there was proof of.... Proof could be in the sense of testimony from a victim that she had already been harmed. At that point, charges would likely be laid and the person would have to go on bail. There would be conditions they'd have to follow if they were released on bail or detained until a trial.