JBR's attacker had access to JBR for perhaps hours. During that time, JBR was apparently redressed from what she was originally wearing. She had a neck ligature and a multi-looped wrist/leg ligature. The possible combinations of possible activities unfortunately soar to include molestation without injury (most common), child pornography, sadism, AE. All because of the time and the ligature restraints.
RDI was there, saw everything, so they know what happened. I wan't there, didn't see anything, so I don't know what happened. All I know is what is possible to have happened given the time and the equipment.
Sure someone who takes photos is a sexual offender, but perhaps not a pedophile. The pedophile didn't need to be there. The idea that a pedophile never exploited JBR in some way may be an assumption on your part, and totally conflicts with the apparent nature of the crime: a 6 year old female that was sexually assaulted, strangled, and headbashed.