Self-Defense

People on this board keep mentioning how the last scene couldn't be defined as self-defense. I don't see why it matters, because the protagonist defeated the antagonist, as we all like to see happen in the movies.

But I think that when they claim self-defense, they could be talking about more than just that one night. He kept tracking her down through the whole movie. He threatened her as well as people closest to her and whenever he was around her, he'd beat her. I kinda use the word 'beat' loosely because I'm not sure if I'd classify the first instance as a beating. Though it was still wrong and he should be castrated for it. I would think that a beating would be more like when she was trying to sneak out, like he doesn't stop hitting her, instead of a slap and a punch. But like I said, beating or no beating, he put his hands on her in a negative way and should be punished.

But back to my point, after everything he did, physically; mentally; and emotionally, to her she knew he wouldn't stop until he killed her. So even though she went to him and started the fight, she was still defending herself against all of the things he did, and all of the things he would have done, which would have ended in her death.