First time poster here. I've been following this case since the beginning when I read it on PT. I don't mean to disrespect or offend anyone by this, its just what I think happened.
CR is trying to put the moves on LS and takes her back to his apartment. LS is fading so CR brings out some blow to perk her up so she doesn't fall asleep and ruin his plans. Something happens to LS (heart attack, coma, OD, etc) and CR panics. MB hears the commotion and comes down to find drugs laying around, CR a mess, and a girl who he barely knows ODing in his living room. MB wants nothing to do with this situation and asks CR if he got the coke from JR (likely knows hes a source). MB decides that this is JRs problem now.
I'm not saying JR is a dealer in the classic sense, but may be known for always having it and selling some to friends -- or maybe was a small time dealer to support his habit/be the cool kid with the supplies. My university was filled with JRs, and most of them assumed this role in some capacity.
So, CR and MB take LS over to JRs. LS is geting worse, or is already dead. Trying to figure out what to do, JR/CR/MB remembers that DR did drugs with her earlier in the night. JR calls DR to unload LS off on him. No answer. They start to panic, and JR calls his last resort -- his drug dealer. JR sends CR and MB home, not wanting them to be around when the dealer arrives. Drug dealer answers, picks up LS, and does something with her. Maybe JR goes with him, maybe he stays back and watches them drive off from his balcony.
My guess is that LE doesn't actually know who the 2nd call was placed to. ALL serious drug dealers use pre-paid, untraceable cell phones. JR can claim ignorance on who the number belongs to because it was LS that supposedly made the call.
Again, I mean no disrespect to LS or her family. I can't believe this is a random abduction. This is just the only scenario that makes sense to me where all of these boys are tied together in silence -- they're all part of the crime, and furthermore would have to deal with the repercussions of snitching on a cold-blooded criminal who just disposed of a young girl's body. MB is the key link here, because if he didn't play an active role in her disposal, he would talk. No one would stick up for their buddy in a situation like this if they weren't involved.
Large quantity drug distributors in college towns are no joke. They are serious people who make lots of money, don't **** around, and would not let a helpless dying girl or a couple rich dweebs get in the way of their business/freedom. The parents need to push on a civil suit so they can depose these *******s and find their daughter.