"I am really struggling financially and she brought up the possibility for her to stop renting her place and we would take turns at my house. The house is in my name. She said she would like something in writing as far as a schedule but made it clear that whoever's night it was to not be at the house would leave after dinner or shortly their after."
I don't think this is a good idea. Unless you are piecing things back together and working towards a R, this just seems like a ploy to make life more comfortable for your W and she is using your financial hardship as a tool to solve her own problem.
I think it would actually work in your favor to not go down this path at this time. It would send a clear message to your W that you are moving on with your life and that may actually cause her to draw closer to you.
Maybe you can get a p/t job to bring in more $$ or maybe bring in a roommate other than your W.
Me51 W53 S17 S14 M22 T25 Bomb-9/11; A-11/11; I move out 11/11
It's easy to find our bottom, it is our top that requires cultivation.
Every rough spot adds to our emotional constitution. -Barney Fife