It seems this would be hard for her to prove, unless she has witnesses that can vouch for her and say that you actually did assault. With assault she would also have to prove there was an intent to harm, I believe. I'm not sure she can prevail on an assault charge unless she can also prove the intent to harm. Intent would be the keyword..

I suggest you post your situation in a legal forum for better advice. This is the one I've used before... http://forum.freeadvice.com/

wish you well!!