I sure would have bashed his head in if it meant I had a better chance of survival... plus, she hits him enough times on the back with the gun, so obviously she wanted to harm him. But why couldn't she have just moved the gun stock slightly to the left and started hitting his head instead? Same amount of effort involved. It's nothing to do with the characters anyway, it was the writers. The same writers who had the heroine spend an eternity looking through a bunch of the killers videotapes when he could be back at any minute (even telling her friend - "I'll be 5 minutes", yeh right).