My sweet, loving wife (91) has had moderate AD/dementia for the past two years. It developed quickly, without much warning. Suggestions?

She does not eat or drink on her own and has been on PEG stomach tube feeding 4 times/day since mid-2019. I'm 92 with minor physical issues and still reasonably clear-minded. I have a competent health aide to assist me with the feedings five days a week. My wife manages her personal needs of washing, dressing and toileting by herself, although we cannot get her to take a shower. A big problem is her refusal to leave our condo apt. I can barely get her to stand at the open front door. Any medical appointments or discussions have to be virtual, and they involve me because she will not talk to her doctors or psychiatrist. She had been getting eye treatments for a retina issue, but that stopped two years ago, and her vision is poor. She used to go on the computer to review news, etc. and play card games, but not anymore. We traveled extensively abroad, but I can't get her to even look at photos or videos covering our trips and visits. She says "that was then and this is now." Occasionally, she talks about being ready to"go". We have loving and caring children and grandchildren close by and she does relate pretty well with them.

Any thoughts on how to motivate or encourage her to leave our apt., because at some point in the future she will need the PEG tube replaced or another medical treatment?