feel like taking a week off and just doing it all myself.
Traditionally, was it your W who saw to the needs of house cleaning? How many hours a week does she work outside the home?
You are thinking of missing a week of work to clean the house. What is the real motivation or intent of your heart? Is it to help her, although she has neglected the conditions of the home? Is it to show her how negligent she has been...and now....YOU are missing an entire week of work to clean up and to take care of her work? Are you so bothered by the conditions that it would be worth a week's salary to get the place clean? And, when it reaches this stage again, will you have to take off another week?
I have not been in your M shoes, but over the years, I have had several individual adults to live with me (for a short while) who did not show respect for my home by leaving their mess and cluter for someone else to handle. They showed no apparent concern that someone else was left to clean their mess. It can really grate on whatever relationship you have with them. I found it amazing how they were not embarrassed or even ashamed of their lack of responsibility to clean up after themselves. I was left with four choices. Discuss it with them, and hope they change; say nothing and clean up their mess; ignore the mess as best I could; tell them they have to leave my home. None of those options were pleasant. The longer I lived in the mess by my uninvited guest, the more I let it bother me.
It's odd how it can affect you when you have emotional attachments to the person. I suspect in a MR, you could see their negligence and mess being symbolic to their present frame of mind.
My recommendation is to be your own best friend here. Whatever you do about the clean or don't clean, it is not going to affect the wayward mindset of your W. I hope you can detach emotionally from the mess you see around you.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
