I think the key is looking at the "observe what is happening when you make changes"

I don't know if sex was a mistake and different people will have different thoughts.

There is the option she wants to eat her cake and have it too by living alone and still have you around.

Some on here will say: file the D and that might wake her up that you aren't going to be a plan B

But yes if it happened before and a few times it may have happened again.