Glad that you dropped the questions around her "break up". She may let you know, but only when she is ready.
What would get you closer to your goal? Questioning her and having her make a choice to R before she moves back in for the month, or just going with it, as though it is a long lost friend that would be there for an undetermined amount of time?
The hardest thing for you might be to keep your expectations at a minimum. It will be the best thing you can do.
While she is "visiting", make sure you have a lot of GAL scheduled and be sure that your 180s and any other improvements continue so that she can be reminded of the fool she would be if she left you.