Advice needed re:respite for Mum?

I am trying to organise for Mum to go into respite when we move because I cant manage everything...I just can't. Mum is determined she is not going to go and currently they are listening to her not me. Advice?

Right now I feel like taking her on the day to the respite home for a day visit and not going back to pick her up, but that would end me in deep poo so don't even suggest that route!