Good pickup about the investigators thinking she was killed elsewhere, though I would still say a crime scene could within a vehicle on site or somewhere nearby or elsewhere and contained to the vehicle. i’m not sold on that, but I am sold on a vehicle to transport them there, and think a vehicle is very likely for the initial contact/pick up of the victims.
I should probably re-read that nj.com piece when I get a moment, as I had overlooked that information.
I do think that heroin and too a lesser extant booze could be used to incapacitate the victims in short enough order. Injecting heroin is going to hit them heavy and fast. Booze will certainly take a bit longer, but the vicitms could have already been somewhat intoxicated from first contact with the perp. Cocaine I wonder about, as I believe that is a stimulant. Certainly smoking it will have a nearly instant affect, however I don’t know if it would incapacitate someone.
I’m thinking the perp was probably enticing the victims with the drugs directly, rather than offering cash. I’m thinking the lure of payment in an indulgent amount of drugs is going to possibly more attractive to a user than an equivalent amount of cash. It cuts out the middle step of taking the cash, finding a dealer, etc. all this could go down very quickly in a vehicle, which I guess is why I’m so reluctant to give that scenario up.
As someone who's tried Coke and has a lot of wolf of wallstreet type friends I'm positive Coke wouldn't do that. They likely did heroin which can wear off by the time needed or they can do a speedball once it's time to not be so out of it. Or simply snort a line or have some meth once she needed to wake up. Also no I've never been an addict but know a lot about how drugs effect you and what cocktails do what. Heroin would have her so zoned out she'd be defenseless