It was fairly easy to see the Incident Command Trailer post with the naked eye from about a mile or closer depending on your eyes (she may not have had good eye sight) as that is also a 5th wheel trailer, and those are tall and big trailers that stick well above the predominant creosote/cacti vegetation. If she had walked the opposite direction (meaning west instead of east) then RT's story would not match as he said she walked ahead of him (meaning east towards the trailer). But SAR searched at least several square miles in each direction (based on the tags and tracks I found). SAR it looks like emphasized the search west of the trailer as that is where RT told them they hiked. They did also cover east of Kelbaker to "cover all bases" as one of them told me in passing, but did not focus their search there as far as I could tell as an independent observer (meaning less foot prints, no 4wd off road or quad tracks through the bush).
My main concern was also the shelter theory, that she may have gotten off the trail to seek shelter in the dense thickets, rocks or if RT story is incorrect, worse, in all kinds of other rock formations further south, or west into the Granite Mountains. It's about a mile from the trailer turnout as the crow flies to where you hit the wall of the Granite Mountains. Unless they were climbers, they would not want to attempt up there. They could have followed the dirt road that skirts South around the foothills of these Granite Mountains, but all those trails were heavily driven by SAR and Sheriff vehicles. That's probably what they did initially, just cover as much ground as possible in as fast a time. I also saw lots of quad 4wheeler tracks running straight through the vegetation, so they would have done that according to their grid search likely. So I don't think her going way beyond the search grid is plausible, with the few facts that we got from RT. Robert is going to need to provide more detailed timeline and an exact account of where they went and what they did and show the pictures he took in order to help the volunteer searchers.