Why does she think that she can waltz in and out of the house whenever she wants? Do you get to go to her place whenever you want?
Maybe I am just projecting my negative feelings onto you, but do you feel like your W is pulling the puppet strings? Especially after last week, when you said no to ML, and then ended up doing it anyway. Now she knows that she can keep you on the hook with sex.
I guess ML could be a sign of progress, though frankly, I feel like if she was serious about wanting to make things work with you, she would be focusing on the important stuff rather than ML at her whim, and letting you know that she will not be back this summer, but will walk into your house (and life) if she feels like it.
As you know, my H was saying all sorts of positive things - never that he wanted to R, but that he was hopeful, etc., and he was all about ML, but I have recently learned that he intended to D me the whole time. I would say that if she is wanting to ML, but not having any kind of discussions about R or how things will change, or how that will work, that is a warning sign that she isn't really ready to R.
Of course everyone's sitch is different. But it seems to me, from what you have posted, that your W is just doing as she pleases, rather than making a serious effort to R. So it's up to you if you want to go along with it.
me: 44 XH: 42 M 11 years D10 and S8 Bomb drop 9/27/13 D final 7/1/14