I suppose we will eventually find out.
look, he’s 23. when i was 23 i had 2 kids but these days he’s still (probably) immature and does not get his feet held to the fire about anything.
Could be they grated on each others last nerve in the van, maybe he did not give a rip what happened to her, he went home.
I’m not sticking up for his behavior, just saying maybe he did not kill her ( i realize leaving her in the desert did not help the cause)
You’re correct, we’ll find out if he talks.