Hello. I've just joined. I wish a forum like this didn't have to exist, but I am glad that it does. You do a good job sharing info. in a responsible manner.
A thought I had about this:
Some people speculated that the final text from Hannah was odd. If the text were written by someone other than Hannah, that person might have been trying to draw attention to himself. Specifically, I'm thinking of the disappearance of another young woman in that general vicinity a few years ago almost to the day. Perhaps it could be the perpetrator of that crime who wrote the message, giving a gruesome reminder of past actions near that location and an in-your-face to LE.
But it could be, too, that she didn't know where the party was, not that she didn't know the area ...