Very impressive. Another fave from me! :D

The first paragraph was ok until 'The pain came swiftly, fast. It hit me like a ton of bricks.' I see what you're trying to do but don't describe it as pain since you just said that there wasn't any, 'The second thing I noticed was that it did hurt', describe how it hurt in a different way. I can't really say this so that it'll make sense but I hope you get what I'm trying to say. You also might want to say something about why she's cutting herself, in the end it looks like she's just doing it for attention, which I don't think you were aiming for. This story has potential, keep up the good work.