<modsnip> No one here knows anything. We are all just theorizing. Who-dunnit is anyone's guess at this point, and they are all just guesses. But LE has her phone and they have been able to get lots of info out of it, as well as other social media access on her computer because of having that phone, so I think we will learn who-dunnit at some point. IMO, no one in her life is NOT a suspect.
Anyway, not to add to the questions, but let's not forget:
FIRST her truck was found
THEN the next day her phone pinged over by the house she was last seen (miles and miles away)
THEN that same night her phone magically appeared in the area near her truck (miles and miles away)
<JMO> For those reasons alone, I 100% feel there is foul play involved. Did she get herself down there and put herself into that river? No. Was she alive when she entered the river? No. I think someone wanted to dump her truck off the boat ramp but got stuck so went to plan B and carried her down there. But in their haste they forget to drop the phone into the water. I think later they found a phone, turned it on to see who's it was, realized their mistake and hurriedly got rid of it. Oops. </JMO>