Zero evidence BG knew the girls. Zero.
I would say, zero evidence they knew him. He might have known them, or about them. He had to factor in their fierce loyalty to one another. Either way. Even an SK, although a non-local SK risks less if one runs away.
But think of this. If the family says, one of the girls could have run away but did not abandon the friend, they might have some proof to it in the audio. A SK not knowing the girls takes his risk...but one could run away, yell, scream, set up Delphi on the chase for him, make the day spoiled. Either way, be a witness. So either he knows how to abduct a kill a group -and these are not Lyric and Elizabeth, mere children... these are athletic teenagers, and he does limp, to me, at least - so he has been trained in this thing; or, he knows that neither of the girls will run for her life. And this, to me, is the most tricky point, because IRL, we can not predict human behavior. It is emotional. (Logically, it would have been better if one girl ran away, because another was doomed anyhow).
And how does one know what emotion would prevail? Why not plain old fear?
If I thought that some major international cartel with hired assassins operated in Delphi, I’d blame it on them. But I doubt, because the money for this is not in Delphi, or at least doesn’t seem so. However the killing is too well-organized, everyone hints at someone local or familiar with the locality and yet no one knows the person; from very thin hints I can guess there are sadistic elements (typical for a SK), and yet they probably can’t link them to similar MO in other places, and on top of it, the person knows how to leave no DNA! How? Or the DNA was there, but can be easily explained (I don’t think so, for many reasons). And I can’t believe he is young from the video or the audio, and yet older people don’t know that much about DNA, and also, it was pre-GK case age. (GK’s case was published when? 2018?).
And nothing leaks out, and it is the strangest thing. DC doesn’t talk...well, usually the people talk. Here, nada. Fear.
If it were a random SK from the Packers, people would scream about the details out of fear. Here, it is as if they are scared that someone will come for their child if they talk.
How can we reconstruct it all?