Well now with the GF as the photo recipient, I'm once again not sure what to think.
There seems to be something funny with the money beyond the photo. The charging docs did say there was no sign of "a manilla envelope, loose cash or any other items on the front seat or floor of the vehicle." Why would they bother to say that? It sounds like they thought money might be missing. And why the switch to an envelope anyway? I can still think of innocent reasons for those things. It's just peculiar to have to come up with so many for one witness - one who delivered all that money.
I wonder if there was something said in a voice mail or text that went unanswered that we are not privy to. Like, "where's the rest?"
We can only speculate, though, and I feel pretty useless doing that.