I agree, Rob's theory is a really good one. And an excellent point about why would she be meeting him at PTL in the middle of the night and not just at her apartment since her roommate was out of town? I know this has been discussed before and it was theorized he wanted to be hidden, in case TM came looking for him and knew where HE lived, etc., but it just doesn't really add up.
The part about them waiting for her to get home, then calling, is a good theory.
If this was all planned out, then yes, why? I agree, Bestill, I hope we get those answers.