Barbs in the desert, like she don't need to wander off for privacy to pee....imo
I get the whole heat exposure thing...but she was close enough, it appears to refuge (the RV) If, for some reason she felt unsafe, then we do have an abduction scenario I guess....or she has gone off track to escape...been chased into the desert...
So many scenarios...
Somehow a theory that BT needed to had to use a washroom has become a fact.
If you listen to the interview, RT states "she wanted to EAT or MEET at the RV".
He turns his head so I suspect it was "meet".
The transcribed interview is incorrect as he does not state USE.