My take is that no one "gets" a supportive wife and you can't change her mind. She is the only one who can choose to change her mind. People can change their minds if they are open to that process. So how to encourage that process? Openness and honesty. Lots of communication. Lots of open honest communication from both of you. If it something you want, then you need to support it. Don't wait for her and expect her to do it for you.
