Hi dusty,
I was thinking last night that maybe your DD is just struggling to resettle without you because of the harness. When we wake up in the night we roll over and resettle or move our 'dead' leg etc. Maybe she is waking just a little and then trying to move a little and the harness is stopping that. Does that make sense? DS2 is sleeping with us at night and he moves about quite a bit (and kicks and punches us!). I know he's a lot older, but it could be the same thing. Maybe DD just needs a bit more extra help in resettling and getting comfortable.

Hope you slept better last night,