I would restrain her, there's a reason why women get raped, a real man can restrain an average woman, and I laugh at a woman head butting me lol, just keep tripping her, they have like no fighting skills. Now a woman who does happen to be stronger than you (not the average woman) only then it is acceptable to take more force but you know how much to take. It's still not right to just hit women just because they think you won't do anything because you're a man, women are weak when it comes to fighting and it is extremely easy to good the average woman down, show her who is boss about the male nature, it's alot easier than you think.