More information that might useful.
After she was reported missing, her phone pinged one time in the Del Camino area, south of Mead
Looking at the last ping on the timeline, there are several motels, truck lots, and even a night club nearby. It is close to the interstate also. Has the detective checked into video cameras around these locations? Have they looked into every truck that was in those lots that night and reached out to them? Tracked those routes and checked those destination areas?