If, as per Kelsie statement, there were between 10-20 other "kids" out on the trails when she dropped them off (and others), were they hoping to meet up with someone in that group or someone else? My only problem with that theory is, wouldn't LE have found the electronic communications confirming such a plan? It could have been much simpler than that. Kelsi telling her boyfriend she's on her way but is dropping the girls off at the trailhead first. Kelsi's bf telling his bud, no I can't come right now, Kelsi is coming over after she drops off Libby and Abby at the trails. Or, someone says, "Hey, Libby just posted a SC pic of Abby on on the bridge." I'm still in the camp that the killer somehow knew that Libby and Abby were going to be there and that the girls, or at least one of them, was targeted. I don't think they knew him, but he knew OF them. Just speculation, but this crime went down without a hitch, VERY quickly and no one heard or saw a thing. Except maybe the witness that "saw something" she felt needed to be reported later and may well not have taken place at the trailhead or park. Well, I guess not exactly without a hitch as he is on video and audio. And yes, that surprises me too, that that evidence exists and there is still no POI to focus on. Although, I believe some of us have our own personal POI/POIs?
JMT, JMO, MOO and all that Jazz!