I don't really have any suggestions for helping her sleep - my DS was sleeping well until about 2 months ago and is now waking again at night, sometimes every hour or so. I find I can keep my sanity if I think about his train of thought if he's crying... 'I saw so many new things today mummy and my brain won't switch off, please help me get to sleep cos I'm sooooo tired...' Of course, if he decides it's play time this doesn't work, but I try to keep the lights off and say very little to him in a whisper so he's getting to know it's not play time. Sorry I can't be more help, but hopefully it helps a little just knowing you're not alone.