The "not-a-boundary" was the conversation we had on Saturday for which I was pilloried here-- I had hoped that she would stop leaving me home alone. But obviously, I can't control that, and (as you yourself pointed out) I don't have any significant consequence that I want yet to enact in response to that behavior. So during the MC session I said that I would not expect W to keep track of my schedule, implying that she might as well stay out. And because of Sunday's meetup with the midlife-dating group, and Monday's successful acting class, by Tuesday's MC session I was actually in a good mood and felt that I would no longer be bothered by finding myself at home alone. This being Wednesday, I will find out soon enough whether I am correct to think so.

I confess I'm not exactly sure why W is still amenable to MC. It is serving a function-- W and I have agreed that we will only talk about R in MC, and except for that not-a-boundary conversation (provoked by W's insistent demand that I explain why I wasn't talking to her) we're essentially sticking to that. But we don't have much to say to each other right now. So it may be that in a week or two she'll suggest that we skip sessions until the 2-month deadline we've given ourselves to start talking about D again. [Although I expect that, two weeks from now, I will want to address the camping trip, because that would happen four weeks from now if it did.]