There are positives in your stitch. Be very thankful there is no A. She hasn't left the home. She goes along on family outings. Try to think of the positives when you are feeling so down.
What can you do that brings laughter to her? Even if it's just for a minute, laughter is like good medicine.
Does she get tickled when watching you play with the kids? Does she enjoy comedy movies? How does she interact with other couples?
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!