My sil did it with her 8 year old and a reward system, but it's supposed to work for kids a bit younger too. Basically, you pick a bedtime and gradually move towards it (so - say 7:30pm). If your dd is going to sleep - SLEEP, not bed at about 9, then move it back to 8:40pm. You do a routine, explain that it's time to sleep, and what she'll get if she stays in her room etc. Then, if she's still awake after 20 min, you get her out of bed, and do QUIET activity for 20 min, then back to bed. Keep doing this until she falls asleep. Rewards are stickers towards a bigger reward and it's every time she stays in her room all evening, every time she has a night where she doesn't have to be brought out for quiet time, etc. It worked for them in about a week or 2, I think. But her room has to be ready for bed too - no lights on (other than nightlight), etc. HTH!
