Brother did not do it. I personally believe the mother did accidentally and had no idea of the stage the father set. There is lots of evidence that JB may have been being abused before her death.
"The grand jury also had alleged that each parent 'DID ... render assistance to a person, with intent to hinder, delay and prevent the discovery, detention, apprehension, prosecution, conviction and punishment of such person for the commission of a crime, knowing the person being assisted has committed and was suspected of the crime of murder in the first degree and child abuse resulting in death.'"
http://www.cnn.com/.../25/justice/jonbenet-ramsey-documents/ (source)
WHAT kind of innocent parent delays calling for help for their dying child?? They hid the body. The evidence points to no one else outside the house. The one drop of "foreign" dna wasnt identified until way later, and was twice noted as being too small to test (the same type of evidence that was used against Amanda Knox, and has been blasted for being worthless by courts all over the world).
If you cant put one of the parents hands on the child at some point in the evening, that doesnt mean that someone hovered over the snow, left no tracks, broke into a tiny broken window FOUR floors below the sleeping parents, moved silently through the house, killed the kid, staged the body, wrote the note, had a snack, placed the note, and left.... undetected and leaving not a trace of evidence... when Patsy- by her OWN account- was asleep max of 4 or so hours. It just means that bad things happen behind closed doors on WEALTHY homes, the same as they do in poor neighborhoods. Thats what people dont want to face.
The premise is similar to Caylee Anthony: If the people who love her most, are not forthcoming and protective of these kids, then how do you punish them? Their punishment becomes living with what role they played in the tragedy. Why continue to spend time and money to drag these people into a court of law?, some say. Many believe justice is "done".
So does that mean that these kids are disposable? If their own parents dont care, then why should we? They are throw-away citizens. The concept of throw-away citizens can, then, bleed over into other areas. For example, a child who is on medicaid should receive a vaccine that contains ingredients already found to be dangerous; a child from a higher income home has parents that pay for private insurance- they should receive safe medicines. Children on medicaid die, but they-statistically- would have grown to cost society, anyway... right? Everyone is "happy".
Someone needs to protect the children, both before AND after tragedies happen.