MOO Personally, I believe LE would have found the evidence to show that if it had existed. Likewise, contact with others would have discovered and been investigated.
The murderer that killed the girls has been thinking and planning for a long time, and has made several, if not numerous reconnaissance hikes to plan his route and ending location and look for a victim. Watching for the "right" victim is an important part of leading up to the murders.
To me, trying to attribute any part of his motive to contact with a common CSAM catfisher, underestimates and mischaracterizes this type of killer.
He did not hatch a plan to SA the girls because of any contact with KK. He was at the trails that day looking for victim(s) that day, that he already planned to kill.
RA and KK are totally different animals.
Well known Criminal Profiler/author Pat Brown talks about RA and why she calls him a serial killer