"I called there to tell them how sorry i was about our marriage after i read your email, and your mother asked me questions. I deferred them to you, but she made some inferences, and I didn't deny them. I did not tell her, she drew her own conclusions. Whether you chose to believe it or not, I love your parents too. They are a part of my life too."
Please do not send this message back to your W.
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!