icanhandthemback
I am assuming that it is cheaper in the Care section rather than the Nursing Section which is why you think she should move?
Perhaps it would be a good idea to look at the Care to be Different website and see what constitutes medical care as it is in split over several domains. If you feel your mother fits any of those, you might be entitled to a Nursing Care payment. If you aren't then you would have good grounds to ask for the move to Care Only.
I read it that on the nursing floor most of the residents stay in their rooms, mum being "mentally switched on" she would benefit from being on the care floor where she could interact with others and enjoy her time more. I didn't read anywhere that it was financial. I think the OP just wants the best for her mum.
