If she wants to discuss a D or S, you could surprise her even more by saying some like, "I agree that the M is not working". But you don't explain any futher than that. You've already told her you needed to think about some things before you would be ready to discuss it. Just b/c she calls the time and date (tonight) doesn't mean it works for you. Just listen, but don't talk. Think you can do that?
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!
