What a bunch of ineffective bunglers. Grab a finger and bend it back. Kick him in the balls. Shove knife into his eyes. Grab a brick and knock him out. ANY FUCKING THING AT ALL.
Don't forget to smash the fingers on BOTH his hands, so he knows NEVER to lay a hand on her again.

It's a fairly trivial matter to plunge a thumb into an eye socket and rip out his fucking eye. That would have absolutely removed every bit of his motivation to continue attacking her.