There’s one piece of the puzzle nobody thought of. If your true goal is for her to care for the home, not davka clean it, and she’s physically okay and has some spare time, try to explore different outlets for her to beautify the home. There are loads of tutorials online, from easy curtains to ” faking” art, designing clocks, mounting photos etc. If she’s not depressed and you’re supportive, it may be a creative way for her to gain some attachment and appreciation of your new home.
If you think she’s a little depressed I’d recommend discussing it with her doctor AND have him do a blood test to check her thyroid levels.
Good luck!