We’ve had a few discussions about the phone either being mailed or attached to a truck.
This scenario would encounter the same problems, as it wouldn’t explain that lone ping, or those text messages.
I can’t find a case where a killer has done something that sophisticated with a phone, and I’m not sure it’s even possible.
If it is possible, then how did the phone go dark again, and where is it now?
It appears her phone was off for a period of time, possibly as long as 3 days, prior to those texts being sent.
If a person was accompanying the phone, it’s theoretical possible, however I don’t know if there are passenger trains operating in that particular area.
I’m sure that LE would explore this possibility, as it would account for how KB could have traveled without her vehicles.