Though this is a couple years old, you eased my mind tonight. My husband sleeps on the hide a bed, not due to problems with the marriage but personal habits like watching TV, snoring and too small of a bed in the bedroom. My husband is 50 and never thought he would have a child. I can't explain, you have to know him to understand every fear he has for her and every desire to be with her. He wants to enjoy every minute. My daughter feels safe sleeping with him. We have a very noisy apartment complex plus when we had times we were separated she had no place else to sleep except with a parent. I have been pushing for her to be a big girl and sleep in her own bed and she has a time or two and shown me she can, but she doesn't want to. I should add sometimes she chooses to sleep with me. I think I have caused more stress trying to force what other people think we should do than any damage sleeping with dad could cause. I love them both and don't want to do that. I just want what is best for her.
This is the cause of many posts we have had on this forum my own opinion is that is is okay for a child to sleep with her parent especially as its such a short time , I don't think on the whole that parents , male or female are abusers.She may sleep better in her own bed, and as she gets older she will want her space and privacy, He is her Dad and its up to him if he lets her or she goes into her own room, if he wants her to sleep in her own bed he has to be consistant .and firm. Now if he has a partner or GF its differant as it brings their intimacy into the matter .then its a big No No in my opinion .Good luck caring Gran