Mom was accepted into memory care unit and can go in 6 weeks. How do I explain this to her?

Hi Coral, I don't have to tell you how emotional this is for everyone! The ONE 'good' thing about memory patients, is they forget the conversations shortly after you are finished! How do you feel about the following approach? -- Mom, the doctor says you need a bit more help with walking/ getting around (whatever) There is a wonderful place near us that helps with this. We're going to try it for a while to see how it can help. Not much more and no repeat conversations. Don't give her a chance to angst over it. When my Mom was finished rehab (after a broken hip) I told her that the doctor wanted her to get more practice walking and moving around. The next day, my sister accompanied her in a medical transport and she arrived at the Memory care unit. I was there waiting and we already had her room all set up for her. She was there for 18 months before she passed away and I know I was fortunate that she never gave me a hard time about it. It just became her new home.
I call it 'gentle story telling'. Good luck and keep us posted.

Thank you geewiz. That's an excellent idea!