The NFL didn’t play “judge and jury” as relates to the justice system. The NFL just kicked him out of the NFL, which is their perogative.
Now if she wants to press charges (which she should) then it would be up to a judge and possibly a jury. She should do it.
It will be difficult in a court of law for her to win anything. She took the first swing. Fundamentally we care that she’s a woman and he’s a man and all that. But the law doesn’t distinguish. She swung first and he swung second. She has no case.