It’s your duty to take care of your parents. They have given their half-life in raising you. Now, they are your responsibility. You have to talk to your wife about this. Make her understand that they are old and can’t live on their own. When she got married to you, she was well aware of these things. She should have told you at that time. But now she has to live with your parents. If she has a problem in taking care of their health and not living with them. Then, you can appoint a nurse or a caretaker for them. The caretaker will be with them 24/7. And your wife won’t have to do anything. They won’t even meddle in her life.