I am beginning to notice a theme in your animations, ending in violence. You are really good at setting up the expectation that it will end normally and friendly, but then all of a sudden, she turns out to be a monster and kills the guy. I guess that's her way of showing she likes him. Unlucky guy.
The sound editing, I feel, was well done. The footsteps and background ambience are good; they are in sync with your animation.