DD was a brilliant baby and slept through from day 1. Now she's in a bed and is playing up big time. She wakes several times in the night and just calls for mummy and daddy. We've put a stairgate on her bedroom door so she can't wonder in the night. She's really difficult to settle back to sleep. Me and dh are both exhausted now as this has been going on for months and months. Tried putting her back in her cot. She doesn't want to. She wants a big girls bed. I think I've tried about 3 different nightlight, wind up music things, leaving the door open, closing the door, leaving the landing light on, leaving the bathroom light on. Nothing works. What can we do???