Come home for the night.... ?

Mom has been in a care home now for 2 weeks xue to dementia and being a fall risk. She called saying that the caretakers said it was OK for her to come one night if I picked her up. Obviously this is a bad idea since she'll never want to go back. I told her it wasn't a good idea because she needs 24/7 care.

1.) What's is a better thing to say to her? 2.) What's should I tell the caretakers to say instead of "yes you can go home for a night"

Quick rant. I'm really pissed that the caretakers don't have enough sense to use more finesse in this situation. She's in a residential care home and we're paying $7k a month.

Edit for clarification and tobpoint out that she has dementia: Yes the staff said she could go home for a night. They've shown on multiple occasion that, in general, they have little common sense.

Update: I visited her this evening and took my wife's advice and told her I'm leaving to go back into the office for a late night meeting. It makes no sense but it bypasses the need to tell her that I'm going back to her home.