hun, that sounds like a nightmare!

Just a stab in the dark here, but I'd be having a close look at the food she is eating and possible side affects. Not just in terms of additives etc, I know grapes and tomatoes have something called solactytes (sp? I think thats what they're called) which can cause sleep issues in some kids. It could be worth doing some wide ranging research on foods that can affect sleep and then perhaps trying eliminating them from her diet.

HTH