You should act calmly in these situations. As you said that your wife wants to get separated from your parents as she doesn’t want to serve your old parents. Then you could do one thing, you can hire a nurse for them or a caretaker for them. This will subtract one problem from your wife’s list. As you don’t want to leave your parents at an old age home, then you should talk to your wife about this matter. They are your parents and it’s your responsibility to take care of them.
Shifting to a different apartment is a little unreasonable but you can take your wife’s advice. You can buy another flat in the same building and hire a caretaker for your parents. It will be easy for you to check on them and your wife won’t complain.