my dd is a terrible sleeper, just got back from holiday (where she slept fantastic!) and the horrible nights have returned, she has started shouting out and crying all night, i always end up in her bed with her, most of the time it's not till 5/6 o'clock in the morning, but last night it was 1 o'clock! do i have just have to be tough to get her out of the habit? does anyone else do this?