Thats a hard one, I would try and kick the wrapping habit for a start as she is over 7 months now. Try wrapping her a little less tight each night untill she is used to it then eventually if she wriggles out she wont mind so much. She might be happy to sleep on her tummy but it would be really uncomfortable if her arms are wrapped up. I remember my child health nurse at my antinatal classes saying "dont do anything now that you dont want to be doing in 12 months time" With my boy, I wrapped him at the start then sometimes forgot to wrap him and from there he now sleeps with just his blankets over him. It might take a few sleepless nights for you but it should get better, they can always get used to new things!