regarding those questioning if you can frame someone with a ping....I don’t have a fitbit or know much about it, but looked up instructions for trying to locate if lost :
“If your tracker is connected with a mobile device, take that device to the area where you think you lost your tracker and try to sync it. If it syncs, you know the tracker is nearby”
If someone knew that they “lost”it there they would sync / ping to locate with Mollies phone. If she intentionally threw it or it was removed it at that site during a struggle or out a window, perpetrator would have to be savvy enough to know how to do that and take a chance on returning to that site to retrieve it or get out of a car at that moment to look for it. Doubtful. Would also seem odd to take the time to go back there and risk looking out of place, especially if you’re from out of town. However, someone who had both her fitbit and phone could intentionally sync/ping there at that location,at a time of their choosing, without her being present to make it look like was there at that time, remove the battery to stop tracking etch. That would also be someone fitbit tech savvy enough, know of WCs history. More likely someone local perhaps. Were there any other regular runners in the area who could've gone past that farm , after encountering her somewhere else, with her fitbit and phone? farfetched perhaps... but we are brainstorming