I can somewhat relate to your sitch, when my W and I went to MC back in may I was under the impression OM was out of the picture ... turns out W only wanted MC so we could communicate better, but had no intentions of R .... I then realized why I was having difficulty connecting and making any progress with her. So in MC I called her on it .... our MC was very good and basically fired a ton of truth darts at W. She blew up and walked out ... as I apologized to my MC she told me, W has to fix her, and out M would never work until she did that , and committed to it .... as she told W ... she has never seen a M work with 3 people.
Reading that line where you W is not sure she is ready .... well as ugly as it is... its her choice, she can live that life (Seems a rather empty and shallow one at best) ... or she can try to work on your M ... you have told her what needs to happen, she has been dragging her feet. I think you need to stay strong, continue LRT ... they have brought you this far, something in your W seems to want the M, but do not allow her the cake eat opportunity. I, like you set a boundary a couple weeks ago and she talked me into a "trial" that is quickly about to expire, I have done all I can, I have changed, and at some point I am enough for her or I'm just not. I am willing, but I refuse to be the only one running into the burning house to save it for someone who cant get away fast enough ..... lets face it, we all are here in a spot we don't want to be in, and its going to take alot of work from both to get to where we need to be.... you can not do it alone.
