She is certainly behaving in MLC "like" ways, although these are also simply transitional components when someone changes their life direction.
That said, if you feel she's MLC, well... you are the one to live with her.
The only reason I point out the difference is, you could "work with" your W through a transition, if she is open to it. Whereas with MLC... that's a journey she needs to do on her own.
What did your W say when you suggested that she might be MLC?
It is unfortunate that you were defensive in her tirade. Hopefully, you can work on validation.
