Abedeus said:
Because you are the stronger sex. And you have (or at least should have - I know a guy that has problems lifting even 30kg on a bench, and he's perfectly healthy) enough strength to prevent her from attacking you. Twist her arm, if you must. Even if it hurts. But don't hit her unless it's absolutely necessary.
Ahh sexism rears its ugly head.
I know women that could kick my ass, and most peoples, fighting back that is. Read my first post in this thread, bottom of page one.
One of my ex's came at me with a bowie knife and I still have the scar 8 years later across my shoulder. It was almost down to the bone, required rehabilitation and surgery. She then tried to stab at my stomach. I broke her wrist to get her to drop the knife (something I felt terrible for, for some stupid reason) and I almost was charged, at 17, with assault causing bodily harm.
Strength of gender is irrelevant. This girl was 5'7" 120lbs max, and at that point I was 6'1", 190lbs and in relatively good shape. If I hadn't reacted aggressively in retaliation, I'd have been dead.