I agree, the most obvious conclusion that anyone would naturally draw from that scene is abduction. I wouldn't think someone going to commit suicide would just decide to drop their phone on the side of the road. Voluntary missing is easy enough without the need to create a dramatic scenario. If LE from the beginning wasn't buying it lock, stock and barrel, there's gotta be a reason.
The really upsetting thing to me is if it WAS an abduction, if that was me ... or my daughter ... and just because they have nothing more to go on than an abandoned phone, they aren't taking it seriously. I pray they have a very good reason for how they've handled this because it's the life of a human being who may not be coming back. Many of us who have been on WS for years are saying this is the strangest handling of a case we've ever seen. I realize it can take months, even years, to get their ducks in a row ... I just pray that they have more than one duck at this point.