I agree the sleep thing is big. Thinking about it, I really don't think that Paige acted like that when she wasn't overtired. Even now if she doesn't get enough sleep, it is a bad day from the time she wakes up until she goes to sleep that night. When she was she 3 she went through a period where she was getting max like 7-8 hours of sleep in a 24 hour period, it was NOT good... she even looked awful with dark circles under eyes. Like your daughter she was always an awful sleeper, up to around 3.5. It got progressively better after that, and now she sleeps through the night like 80% of the time. It has amazingly gotten even better since she gave up her binky (a decision she made completely on her own) a few weeks ago (I know it's terrible that I let her have that long, but she loved it and it was her source of comfort). So there is hope that the sleep thing does get better.