It's okay. Victim mentality doesn't need good reasons to be victimized. They'll run towards you at full speed to knock themselves out just so they can blame you for their pain afterwards.
I would file a police report. Try to film the incident with a friend or find out their information some how. Hitting is assault no matter what gender. Don't hit them back or you'll victimize them and be the bad guy to society. They'll victimize themselves on you regardless, but society won't. She hurt her fragile hands on your body, etc. A girl hit me in grade 6, my flight or fight reflexes kicked in and I hit her back. I had no time to think about it even yet I had to apologize to her and have …
Patrice o'neal has a good bit about this. "Never in my life have I been at a party and gone 'you know what would make this party better? is if my girl were here... she's funny as a motherfucker'"