If someone ramdomly, out of no where, hits me in the face I will try my best to teach them a lesson. The lesson being that if you assault someone at random, you yourself, might end up in a wheelchair. I would punch her until she was on the ground and then I would kick her in the head.
I'm not a violent psycho and I have never started a fight (and only ended a fight twice) but I don't and won't tolerate people shittin' me like an assualt is. Girls are no exception. I'd even feel morally justified (accidentally, of course, I don't want to be a murderer) killing anyone who would attack me. She was obviously a piece of shit anyway if she is assaulting random strangers.
Good thing I'm a big guy with a distaste for alcohol/clubbing and a mean look on my face so I don't get in fights. I hated myself for "ending" those 2 fights the way I did it, but it's the only just thing to do if you have even a little respect for yourself.