IIRC There was mention that they may have held a drugged cloth over her mouth. May be no drugs in her system this way. SOmething only the perp would know.
Despite the mantra on this thread that the brother and ex-wife have their dates/places wrong about spending Christmas in a certain place in 1996, this is what the brother told Greta last night on FNC:
They would come to our house in Atlanta for Thanksgiving and Christmas. And that's one of the points of contention maybe we talk about — and maybe we talk to you tomorrow night — is there's a possibility that we believe he could have been even here in Atlanta with us when this horrible tragedy occurred to little JonBenet Ramsey. And we don't know that for sure. We have to check our photo album and get the dates right.
http://www.foxnews.com/story/0,2933,208907,00.html