Oubliette,
You are getting stuck in the religion. A good father or mother puts their children before themselves. There is nothing wrong with a good son or daughter putting their elderly parent before themselves. Especially so if that parent was a loving parent.
Many, many people who were never JWs put their elderly parents needs before their own. To bring an elderly father or mother home to live with oneself is a sacrifice which requires putting our parents before ourselves. Changing diapers, giving baths, listening to the same story a thousand times, and much more, is a sacrifice of love many selfless grown children provide for parents who are in need.
To simply be patient with an old woman's belief is by comparison a miniscule sacrifice for a grown adult.
Frank