Well, I'm no expert on sleep, but I have been thumbing my way through Healthy Sleep Habits, Happy Child, or whatever the true title is. One thing that struck me is his insistence that sleep begets sleep, that putting a child to sleep earlier may help her sleep later. It's counterintuitive, and I don't know how it will work with a five year old (I've been trying to get my 4-month-old to sleep well), but if it helps, try it. Maybe create an earlier bedtime for a few days running, even if it seems ridiculously early, and see what happens.
Miriam
