I have considered suggesting that she go see our MC alone sometimes (the MC is the first person I began seeing when my depression got really bad). Thoughts?
Since your counselor is basically your employee, let them do the dirty work and suggest to your wife that she should come in alone. Why take on any resistance if you don’t have to? You can even side with your wife a little bit if she hesitates, to let her feel you are on her side and the empathic master of the universe that your are!