What good advice & support you've had on this from the replies & how hard it must be for you & your daughter with such lack of sleep. If i were you, I wouldn't hesitate at all to refer her to the specialist sleep clinic, i believe its in the Evelina children's hospital within Guy's & St Thomas's??!!! They are the experts & will do investigations to find out exactly what is going on & what to do. Alos, do explore tooth, tummy, ear ache but don't let your GP take you off tangent, do have that referral made as well. Best wishes