How to we deal with moving my mother-in-law into our home?

My mother-in-law is 70 years old and has AD. She is currently in an autonomous apartment in a facility, but we want to move her into our home as she is always alone, and has begun to have severe paranoia, delusions, etc, and is getting much worse. The option is to move her to the memory care floor, but we just can't do that to her, she is otherwise healthy and is just very lonely and bored. We have hired a live-in caregiver and have the room for her, but are just not sure how to do it. Do we tell her she is moving in with us, and have her be part of the move, or do we organize the move without her knowledge and set her room up at our home and bring her there? I want to make it as easy and stress free as possible for her, but I know the transition will be difficult either way. Any advice would be greatly appreciated!