Lol, chili. My opinion has changed so many times.
I have to figure in the latest presser (it is likely BG has local ties), the personalities of the girls (innocent softball players, in to band, and wearing funny hats and the highlight of life is to have a sleepover with a BFF), and how BG stumbled across them.
They were just girls barely out of childhood looking for a place to have an adventure and take pictures.
At first, I imagined a lonely old bridge with no one there, so figured a transient, homeless type stumbled across them. A theory came from that. Later I learned lots of kids were at the trail head that day, so that pauses me a bit.
It could be there is more to the story, but I still think these were two barely above tweens were victims of circumstances above their understanding. IMO amd subject to change.