She says, he says... what are you going to do?
They can both, or either, press charges and take it before a judge but he just hasn’t anything to work with.
So any time there is an altercation between 2 people, there can be no charges? Nonsense. And, it’s way too early to reach any conclusions here. There are reports of damage in the house, for instance, so there may well be physical evidence of some sort, whatever happened.