I have always thought that the location of Tylee's Jeep may be a key in trying to figure out what may have happened to her (and possibly JJ). If Tylee's Jeep was involved in the attempted murder of BB in AZ on 10/2 (and apparently authorities have the Jeep), how did it get there?
If Tylee traveled with Lori and JJ in August when they moved from AZ up to Rexburg, did Tylee leave the Jeep with Alex (and ride with Lori and JJ), or did Tylee drive the Jeep herself to Rexburg? I think most 17 yr olds, if moving permanently, would want to bring their car/Jeep with them.
IF Tylee took the Jeep to Rexburg, then how did it get back to AZ before 10/2? IF Tylee was seen by Seth in Rexburg, and IF the Jeep was in Rexburg on 10/2, then sometime between 9/23 and 10/2 somebody drove the Jeep back down to AZ. Was that person Tylee (possibly with JJ as a passenger)? Was that person Lori (possibly with Tylee as passenger - or with Tylee and JJ as passengers)?
It seems unlikely that the driver was Lori, but it could have been. Was Lori seen in Rexburg in late Sept? Was she even seen in Rexburg between late Sept through, say, early Nov., prior to her wedding to Chad?
If Tylee (with possibly JJ) - or Lori (with possibly Tylee and JJ) - drove the Jeep back to Alex's house in AZ (with maybe Tylee and JJ believing that at least one reason for the trip was to drop JJ at either a friend's house or at his grandparents?), it possibly means that whatever may have happened to Tylee and JJ possibly happened in AZ, and more specifically, happened near Alex's.
IF something lke this occurred, and (for argument's sake, let's say Lori returned by herself to Rexburg), did Alex possibly drive her back up (in October, or at least sometime before the Jeep was confiscated)? Did Lori possibly fly back up?
Seems LE could check for possible video evidence of the possible trip (s), Jeep GPS, flight reservations/passenger lists, etc., to try to determine just how the Jeep ended up (or never left) AZ. Just saying that maybe Rexburg isn't the only place to be searching for the kids