Kris Kremers parents walk the same trail as their daughter just after she went missing and prove it's almost impossible to get lost without someone actually forcing them off the trail and into the jungle. Even many of the locals don't believe the girls walked off on their own.

https://youtu.be/cF_9AfrKWKg

Also the backpack that was found miles from their bodies sitting perfectly dry next to the river on a rock.There is no way in hell it could have ended up there without someone placing it there after the girls were dead.