Your W is on a journey and needs to figure things out herself. You cannot force her to attend MC if she isn't interested in it at all.
Also you cannot point out to W that she "should really take a look at herself"...she can't because she's in a crisis; therefore, she's exploring external options to "fix" her angst. Even if it means moving out and living on her own for a while.
It isn't about you or the family at all. It is all 'ME, ME, ME' at the moment.