I don't for one minute think MWG is altering her stand. I do think maybe she is seeing a different approach might be necessary.
I don't think her faith is waivering at all, maybe she is gaining some clarity.
I think her H has always been this way, but when she was less tired and a stay at home mum it was easier for her to just put up with things.
Thousands of us work and run a home, so many of us are stressed because of it but if added to that you spouse looses his job, drinks and treats it as a vacation then no wonder she feels like this.
If you were struggling like mad to keep afloat, running around like crazy and your partner was laid back, horizontal with a beer in hand then you have every right to speak out.
Maybe God is showing her other ways to reach him or at least be the person she needs to be to get through this without turning her self into a martyr. Right now her kids need her well and as happy as she can be after all, she is the only responsible parent they have that they can depend on.
Sometimes it takes a crisis to shift a person out of his crisis and MWG's h knows he can depend on her to suck it all up and carry on, why would he bother to change. He has got it made.