N.P.
eliminate milk from her diet - there was a study that came out in 2002 that said that a hidden milk allergy was the main cause of sleep problems in young children. My older daughter NEVER slept though the night until she was almost 4 and I finally took the plunge to see if it was milk. After 5 days of no milk, she was sleeping through the night completely. Another few days and I decided to test the theory and overloaded her with milk products. She was up 6 times that night.
After that we experimented and found she could have ONE glass at lunch, but if she had it at dinner we had nightmares. If she had two glasses in the day, even if before noon, she had nightmares. It has just been in the last 2 yrs (she is 11 now) that she can have milk whenever she wants and not have nightmares.
She had NO other signs of a milk allergy, ever.