I think its possible someone drove by and threw her in the trunk-----but if this is the case, how come LE hasn't found or released any of evidence of this, say an image of a possible vehicle, like in Jessica Heeringa's case?
Also, just because LE doesn't name a poi or suspect, it doesn't mean they don't have one.
In addition, I've seen many cases here where friends were involved, Skylar Neese, etc, so I'm aware this is a possibility, especially if there was some kind of drama going on. But, I keep coming back to the fact she was leaving---I can't imagine someone from the party going to her car and lying in wait, that seems more like a predator thing to do, so if this happened, some serious stuff must have been going on, and LE would know about it, I think (then again, not always the case, people have killed their friends for nothing...).