Well today we did it. We went into town and left Hattie to roam down stairs, I was a little worried about doing it because as i have said we have Millie who is deaf and cannot see very well, but we got back after 2 hours and there was nothing eaten/ruined and as far as i can tell both dogs looked pretty relaxed. What a relieve. I think i will still be closing the create door at night time as we have just got her back into a normal routine after weeks of her waking at 3.30am.