Glad you had a great time. Right now, your W is not having one due to the job thing and her internal struggle she has been in a while.
She really went outside her comfort zone to do the visit and meal when like you said, she doesn't do sports. I hope she has been told the important things, like her efforts were appreciated even more in light of her stress. Was she properly thanked and appreciated by everyone there? Have you mentioned taking her out, making a meal, or gifting her some time out for massage etc? She should know she is appreciated. Not to save a M, but because she is.
As for Tuesday, don't make it as much about MC - but about people needing help with individual issues at the same time. What can you both do to address individual things that have stessed the M and each other.
Maybe she is MLC. Let me say that if she is, and is going to MC that you are not dealing with one of the most severe cases. She seems to still have one foot on this earth. Her depression is real. Finding the roots and working out ways to manage the effects could lighten her load a lot, and destress things.
I don't think D is the solution. I think if she believed it was - you'd have been served. If she didn't convince the first conselor that was her true desire, it must not be. Sure, she stopped and tried someone out of state on the phone. She is lost. She is desperate. She wants someone to fix her symptoms. But does anyone truely understand her root causes? She probably doesn't, and how frustrating for her. Frustrating for you.
Remember, your deciding she is MLC is not a diagnosis. MLC is usually the blooming of a seed(s) that is many years old. It may be triggered by recent life events or an awakening. But the seeds are old and the roots run deep. She can't solve these things over night or suppress them away. She needs time, and sometimes space. But she also needs support in her efforts - if she is really ready and willing to do some work.
She won't if she thinks all fingers are pointing at her, or discounting her concerns about her life. The whole mission is to avoid letting the M become the blame when this goes deeper. Fix the deep issues together and the M will be the winner.