Can you suggest that a single bed be placed near his bed and they discuss a transition from there to her own room?Perhaps over the course of a few months?I personally slept in my mums bed every chance I got up to the time before she died.There are daddys and mums who can really do this and intend no harm.(certainly not my dad....the first time I asked to sleep in his bed cause mum was gone,he went evil on me)But what a position for you to have to deal with.I would be frustrated personally.I think ,for her benefit,everything else aside,that the sooner he can encourage her to be more self sustaining,the sooner she can come to realize a bit more confidence in herself.Kinda like co-dependency.It does nothing to assist her in understanding that she is safe even with some space away from dad.I guess there will be a wide array of opinion with your situation.