Not quite Holdontoyourhat, my theory arises from what seems to me to be evidence that, not only was JonBenet sexually abused just prior to her death, but also for months, perhaps years prior. So as I was reading PMPT I looked for likely suspect pedophiles who were associated with the family and, based on what was said about them in the book found four very likely people. I certainly didn't pull my idea out of thin air. And it is not based on the fact that a child was murdered in the same house. The same house as who? I think she was murdered in the house of her parents. I don't think her parents had anything to do with the murder or the sexual abuse. I do however, think Patsy was aware that people very close to her were abusing her daughter and she let it happen, because it suited her. Of course, she didn't expect JonBenet to be killed, but once she was aware that she had been, I think Patsy let herself be persuaded to write the ransom note by the pedophiles. I can't imagine she would have wanted John to find out what she been allowing to happen to JonBenet, so I think it would have been easy for the pedophiles to 'blackmail' her into protecting them.
If you mean that I have projected an arbitrary personality on someone who lived under the same roof ie her father (or brother), then you have misunderstood what I have been saying. I have never believed John (or Burke) was sexually abusing JonBenet. I think the abuse was perpetrated by others, mostly when John was away on business. And what is more I don't think John knew anything at all about it, I don't think he even suspected anything. If he had, I believe he would have stopped it immediately.