Regarding putting an OD'd body out in an alley (or anywhere to be found)......it really doesn't matter what we think might be the most logical. These boys probably had three issues which we (presumably) do not have at the moment: 1. Being under the influence of drugs and alcohol (perhaps a LOT). 2. Extreme fear 3. Maybe some guilt for giving her drugs.
We all should keep in mind, as this is being analyzed, that these boys are simply NOT going to be make logical decisions. The drugs/alcohol would significantly impair any sense of logic. These guys are still young and impulsive and as I've discussed before, have non fully-developed brains. Add in some fear and it's typical for one in this stage to consider "hiding". Any parent knows how kids react to doing something wrong, or even to accidents. It's natural for a kid to throw a ball in the house, break a vase, and hide or try to repair it so Mom won't find out. Of course this isn't a ball, nor little kids, but the outcome may not be all that different with immature thinking. These are much older "kids", but this is also a much more serious issue. The feeling of "Uh Oh - let's hide it" may not be gone, especially when under the influence. Add in the fact that they may have been a contributor to her OD'ing, and they may just have wanted to get rid of the situation all together. Being under the influence and scared, I'm not sure they would have the sound mind to understand HOW to better deal with it.
I think it's very important to try to get into their head as we consider what may have happened. I keep reading so many people saying "this doesn't make sense" but yet when you consider how a drunk/drugged person reacts, maybe it does. This is why I keep going back to LS's condition. While I think ODing is a real possibility, it's now hard to believe she left to go to a DD's house, wanting to buy more coke, in the newly as-described condition. I don't think she'd even be asking. Don't think like a person who WANTS to party, wanting more coke. Think like a person admitting to taking Xanex, who's foaming at the mount, stumbling out of an elevator, falling on you knees, and needing to be scooped up and helped out of a building. Would YOU be walking down the street two hours later, out looking for coke? I don't think so. I do seem to buy the Mystery Man 3:38 thing, and I'm not sure how this fits in, but the witness certainly describes her to be the same as the person described her coming out of the elevator. How would this witness have known to describe her this way, when this report just came out? I think it's true, but I'm not sure how it fits in.