I too had heard that the doctor who performed the autopsy found forensic evidence of prior sexual abuse. And that if it was true, JB's pediatrician would have to deny it after her death, because otherwise it would mean he failed to report it to social services and he could lose his medical license.
I agree with you, it is a problem because none of us here know the truth. People believe what they want to believe, but really all of us are making judgments based on information we have heard and read as fact.
Emotionally, I have a problem with someone, whoever that someone may be, getting away with murder. I don't know who killed her, but my gut feeling is that if it was an intruder it was someone known to the family, not a stranger. Which means this person betrayed the trust of an innocent 6 year old, and that breaks my heart.