Here's a map I made up so everyone can get an overview.
As I suspected, there are a
gazillion places that would have had video cameras along her route.
Somebody isn't doing their job. Pinpointing an exact time when her vehicle passed by one of the local businesses on her way home should be detective training 101. That shouldn't be a mystery in the least.
Map here: Zoom in and out really close using the center wheel on your mouse, left click and drag to move around on screen.
https://drive.google.com/open?id=1FcxtCIpiqWLhJB3e-0oIN__jbBU&usp=sharing
ETA: right now I don't know which building she lived in or where her jeep was parked. I may find that out later, and I might not. For now, the apartment complex is highlighted.