It's battery, and the fact that she thought it was a reasonable course of action means that she needs to be given a bit more than a slap on the wrist fine.

I know people might say anger management therapy would be better, but these types of people will never admit that they were in the wrong in the first place. They'll twist things into a persecution complex.

Making her walk a mile in their shoes is an exceptionally good way to address this kind of behavior, and it's an alternative to jail time.

But, it's not like she would be given years in prison for it. It's basically like a forced timeout. Hell, even 2 weeks in jail might be enough to change things.