No place like home

Ophelia95 · July 2022

My MIL has been in the same AL/MC since January. We know it is the safest place for her, and she is well taken care of for both the ALZ and other health issues.
The problem is that she keeps insisting on going home, and when we tell her she is home she gets frustrated and upset. She doesn't believe that she's been in the same place all these months, and thinks she's staying in random places/rooms every night even though she has her own apartment with her own furniture, pictures, name on the door, etc. She sometimes calls crying that she doesn't know where she'll stay that night, and that she'll be out on the street. We reassure her that she will always have a place to stay, but the same conversation ensues a day or two later. She often thinks she's at work (she's a retired nurse) and says once she "leaves her job" she can't stay there anymore. When we get ready to leave after a visit she says she's coming with us, and when we tell her she can stay there she asks, "Well, how will I get home?" She gets very depressed and it's wearing on all of us, and it's heartbreaking to see her this way every day.  
I know this is a common symptom, and everything we've read says to reinforce that she is home and safe, to tell a "fib" and say the house is being fumigated/worked on/etc. and keep making excuses then distract. However, she has enough clear moments that she will call us on it (“you said the exterminator came the other day”) and steer the topic back to "going home" and not let up.

Has anyone found any other "script" that helps in cases like this? We are at a loss for what to say to her.