The community is on edge and in shock. I have lived in major cities and moved to this area about five years ago. While this would not have been out of character for some of those places, it is absolutely unheard of here. A lot of the speculation has no basis in fact and is fear motivated.
That being said, I have heard meth involvement (by the perpetrator, not the Closs family), random, sex offender, online predator, etc. Basically every theory seen here. They family was well liked as I noted before which is why this is so strange. They were the average, everyday household in these parts.
<modsnip - not victim friendly> even before the Sheriff stated she is innocent, the locals I had spoken with described her the same way-shy, introverted, incapable of something so horrific. I am 100% convinced she is the unfortunate victim and I am frustrated she hasn't been found yet.
Sorry if this isn't very helpful, I don't really have any new theories and I haven't even made up my mind what I think happened yet. I love hearing all of your theories, though!