For the sake of argument, let's say she got hit by a vehicle. Occupant(s) is 'put' in the position that it would be less dangerous to throw MT in the trunk than it would be to call LE (driver has a record, etc.). Driver/occupant- by necessity now- have to take the chance of abducting an injured or deceased 20 year old, because to do otherwise, in their book, would be to run an even bigger risk of harm to themselves. Driver might be local, might not. Likely local to Iowa, I'd say.
I'd also say that at that level in the game of whatever criminal enterprise the driver's in, he/she knows the contingencies. He's thought several steps ahead. He knows what he'd have to do if such a scenario ever unfolded. He knows because he's thought it through, just in case. That night, the case came, and he did it.
Let's say, hypothetically, someone I know in Des Moines had their own meth lab. Accidents happen, no matter how carefully you cook. He thought ahead. The day came. With substantial burns on his body (later treated at UIHC), he still managed to fire up the grill & throw frozen meat on the kitchen counter. He took the vodka out of the freezer then chugged. LE arrived to find a drunk man in the midst of an very unfortunate barbeque mishap. He's so drunk, all he can do is repeat, "I was gonna cook the ribs, it blew up". But before LE pulls up, he's already gotten rid of the beakers & chemicals, every last trace, in a trash bin across the street.
Why? Because he thought it through. He knew what he'd have to do, & he did it. Did he see prison *again*? No. No he didn't. He wasn't going back for a life sentence this time. He was sure of that, oh yeah.
What type of criminal activities and who the local players are- if this was not a SK or stalker- is what I am, at this point, interested learning more about.