L.S.
My 10 year old daughter is quite sensitive, very compassionate and gets her feelings hurt easily. She is often the target of bullies because of her emotional outbursts, usually anger-driven. I recently discovered that she has Sensory Integration Dysfunction. I read The Out of Sync Child to get some insight into how she is "wired". I am also seeking professional counseling to help her understand what gets her frustrated and how to deal with the situation.
I am not saying that your daughter fits into this category. But I can completely relate to the overreaction comments you made about when she hurts herself. I have always said that my daughter could stub her toe or cut off a limb and the reaction would be the same. What I have learned is that the sensory INPUT is heightened in her case (more than what a "normal" person would feel). It only makes sense that her OUTPUT is also greater than a normal person's reaction. This has helped me tremendously in giving her a little more leeway to have those outbursts without feeling completely overwhelmed myself. She is making great progress with a counselor.
Again, this may not be the case for your daughter, but you may want to look into it.