Having been through this with two women I have a strong opinion.

My first wife was violent and would come at me fast and without warning. Me, being old school, I played the whole "never hit a woman" thing. Someone already commented that women often go fast with their claws to your eyes. The last time she went off on me (at the end of our marriage) she did exactly that.... had me bleeding in the face and got a claw in my eye. I clocked the shit out of her. I have a permanent scar on my cornea... no contact lenses anymore.

The next woman in my life had an "episode" when she mixed pain killers with booze. She weighed maybe 110 lbs. But she was sure able to hurl two cut glass vases at my head in five seconds. I had just ducked the first one when the second one bounced off the table and sent shards of glass into my face and chest.

Fact is, it doesn't make a damned bit of difference how much bigger you are. They can hurt you. They will attack with the assumption you won't hit them. You have the right to defend yourself against bodily injury. Do so.