It's funny you mention the MC and my W needing to be the one who has at least a small desire to make our M work. Our first session together she told wife that it is most certainly possible to make our M work as long as there is at least part of her that wants it too and that the majority of her thinks it can.
She didn't ask my wife to talk about it, only to think about it. I hope at least 51% o her believes we can work, I am also grateful there is no OM and she has no desire to go that route.