Am I wrong, this sounds like we're creating a jealousy plot line for her to worry about you? Just curious.
Oh she will be jealous but I'm not so sure it is a "love" type of jealousy or a "control" type. At any rate, my encouraging him to be out of the house was more for his sake and to give him a little more strength to his detaching. Every time he can make these decisions, he will get stronger. Eventually, he will have to deal with her b/c she will began to turn up the heat (extremely now). But I believe it is making a statement to her that he can leave his house after she made it so plain that she was coming over. She needs to be shown that he has the strength to turn her down!
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!