Can anyone help. My dd is now two and up til now has been perfect where going to bed is concerned. Since a week ago she starts throwing a tantrum when it's yime for bed, keeps gettign out of bed and it takes endless visits and hours to get her off to sleep. We tried leaving door open slighty and light on in passage and she settles to sleep. Why has she started doing this? Why won't she sleep without the door open and light on?