Sorry - 'tis me again and the saga of my 5.5 yr old's sleep !
Well - it turns out that she is waking up because she is having bad dreams ! This is happening every night now - about 3 to 3.5 hours after she goes to bed ! She wakes crying and then gets out of bed looking for me/us. I am not convinced that she is really awake - her eyes are a bit rolly and she stares into the middle distance !
She can never explain why she has woken up - and the next day she doesn't remember at all.
So - having adopted the new softly softly approach - cuddle and stroke her back to sleep - a very tired me has moved on to wonder how I can stop this happening ?
Is it a phase ? It's been going on maybe a month now - every night ! Before this she was a great sleeper !