Last night I read the thread up until the post made at 2:14AM. This is my first post today and already there are so many pages to read. Before I catch up, I want to post the image of what popped into my mind after I had already shut down my computer and layed my head on my pillow. As usual my mind was still in overdrive thinking about the circumstances surrounding MS's disappearance.
As previously touched upon last night in bits and pieces by some of you, here's a possible scenario ~
As MS rode home she was to meet up with someone with weed. As she waited for the guy to show up (it dawns on me that she appears to be just sort of sitting at the Circle K corner. Was there cross traffic at that time or was she waiting for somebody?). The white truck came up from behind her and probably passed her before turning around on St. Landry. By then, as planned, MS crossed over to the other side of the street and was waiting for the white truck so she could approach it from the passenger side to score some weed. That's why the truck stopped before the houses in that bushy section of the street - if that's a correct assessment.
In the meantime, the Oldsmobile (I remember those cars - older men and uncles who, at the time they were driving them, were probably my age now), turned the corner onto St. Landry street and spotted the white truck stopped there and then spotted MS on her bicycle talking to the guy inside the white truck. The Olds may have had more than one person in it and the two of them decided to take MS's pot up the road (along with her?). They may have mistaken MS's exchange at the truck for some other kind of exchange too. As someone posted earlier, they may have positioned themselves up the road near the abandoned Lourdes bldg. and surprised her as she approached the area.
If MS had prearranged to buy pot, BW and CS may know about it or suspect that is the case which causes them to appear to be holding some info back. If this is true, I'm sure they've disclosed what they know to LE. They may know who the source in the white truck is as well, the one we see coming and going on St. Landry Street. LE may only be interested in the Olds at this point as the driver is their POI. Sound plausible?