Definitely more likely. The only thing that confused me was the idea of describing GPS as a tip—but we don’t have a direct quote from LE, so it could have been garbled.
I think LE is playing their cards very tight to their chest on this. It could be a phone GPS, too.
It occurs to me that this is not a very good route to take her vehicle on. A very remote highway, roads off the highway are gravely or rocky. Risk of flat tire, mechanical issue stranding him. He would need a shovel, at least to dig in that rock and dirt. Maybe he had already been out there digging ( awful thought), in his pre-planning. I don't want to think any more about these awful things.
I want to remember dear radiant angelic Naomi.