I bet that you can't point to a post from anyone who took that position.
Apparently you haven't read some of those MJ threads. There was even a poster who said they would have no problem letting their own children sleep in his bed with him


Anyway, OP I just realized that you said you know she's there because she has a very distinctive car. Can I assume that you haven't seen her leave in the wee hours of the morning then? Who knows maybe he has an arrangement with her family music lessons in return for use of her car?