I would try to get her to an OT, they can diagnose sensory issues and also help you with them. They'd be better than a paed if it is sensory. Your DD sounds a lot like my DS, he reacts to some food additives and has a sensory procesing disorder. He craves some sensory feeling but hates really loud noises.

The book "The Out of synch child" is a great read, its about sensory kids.