My mother-in-law was super dependent on my wife for everything related to technology. Banking apps, netflix, sending and receiving money, anything related to the government she had her do it. Then we moved a few states away. We came for a visit a few months ago and guess what? She manages to do it all by herself now. Even calling an uber or finding the cat videos she likes she was able to do herself now.

The point being: she doesn’t want to and won’t learn because she has someone to do it for her. Since you can’t make her do it, then you just have to accept it unfortunately.