Thanks everyone, I appreciate the replies.
I think I'll ask my Mum if she'll come stay for the time I'm in hospital, and if she won't then ship DD off to their place. If Mum stayed at our place it would be easier I think, as it's 5 mins from the hospital and DH can see her and put her to bed if needed. She loves her Grandma and spending time with them but won't sleep for them easily.
Thanks for the text tip too MrsMojo, will definitely do that one. DD is so young and will be scary enough for her without that too