I remember reading once that people who have just committed a crime are more likely to have a traffic violation. So if police don’t know who to look for, sometimes they review traffic cams just to watch for writing driving; people screwing up basic stops; lane changes; speeding and…driving slower than the law requires.
That fascinated me! I wish I could relocate the article - it was from years ago - I would link it. But alas I can’t recall where it was from. Still very interesting!
All that made me wonder if they are reviewing JS’s driving that day from when she went driving to the school and to look around etc. If she actually did those things she may have been caught on cams too. And if she didn’t, the lack of sightings may also be at odds with her statement(s) to LE.