Interesting interpretation
I'm certainly a little confused as to why you chose this particular interpretation for the piece. I think that I can agree with the sadness, but the violence just seemed to be taking it a little too far, in all honesty.
With how you've drawn the piece, I can agree with the animation style, but there are places that need some more work. For example, when the girl runs, the mechanics are all wrong - no movement fron the knees or hips as she hits the floor. Try having a look at slow motion footage of sprinters, when they come towards the tape, you'll see what I mean. As they hit the floor, the knees move up and the hips move down, relatively.
I think that it's not insurmountable, so give it a go and we'll see how the future pieces look.
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