No one has yet shown me how I can enforce boundaries legally
WHAT????
Then perhaps you should go back and read your first thread. If I remember correctly, you were given quite a bit of information about boundaries and I asked you more than once to talk to a lawyer or police officer to see where you stood about throwing her out, RO against OM, etc. Besides, it doesn't have to be something involving legal actions. I am talking about personal boundaries in the way she walks all over you. That is what I'm talking about!
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!