I believe that Patsy's part in her Shields death, was to as you say tarted her up.
This set the stage for all kinds of horrible things for this little girl.
I have a six year old granddaughter, I could never imagine her mother abusing her in this way.
The sad reality of most murders is that the vast majority are committed by family members or people who knew the victim well. The Police start every murder investigation by assuming that a family member or "friend" killed the vicitm. Some day, if you can, look up the stats on this, it is somewhere in the 85%+ range. Random killings are extremely rare.
One thing I have heard is that the Ramsey's were into some wierd stuff themselves, but I have nothing to verify that with. So why mention it? The people they did the wierd stuff to and with might have killed JonBenet for revenge or money. If I had to bet, I'd look at the family or "friends". Sad but true.