I don't think your plan is unreasonable at all. What person would expect you to hang out with her or allow her to laze around in your home? Right now is an excellent time to be firm about your boundaries.
I'm fairly certain her life will not be one of rainbows and candy hearts. It will be difficult and nothing to be jealous or envious of...or one that would make you feel like you've failed. In fact, I know you'll recover faster than you think once you get your bearings after this traumatic experience. It's, from what I gather from your postings here, your steady character that will allow you to prevail. It all sounds like a bunch of words now, but that's the trait the keeps life going...not these flighty whims and lack of grounding that your W exhibits. I just hope she doesn't bring you down with her craziness. You're stronger than her and that.
Hugs. Be slow and deliberate. Don't panic. You'll be just fine. (I know, easier said than experienced.)
