Solution: Well, don't make girls mad. :/
They get mad alot easier.
I never liked how people think they're allowed to hit someone in the nut sack, and people say you can't hit girls. It's assault if you hit someone in any manner.
I had a similar situation, I was arguing with a girl so she tried to hit me in the nuts, but I blocked her attack and then I brought my fist up and she said "You can't hit a girl," so I said "You are not allowed to hit anyone, a girl can't hit a guy in the nuts or it's assualt." Then she said "No it only goes for girls." And so I actually /facepalm'd. Then I just walked away.