Wasn't there some indication much later that a handyman who had worked at the home some time prior may have been involved? I believe he is dead now, however, so I imagine it is quite difficult to follow up.
And, I truly believe none of us know how we would react in a crisis of this sort. (Just look at all the different ways people grieve. Some of us withdraw, some snap right back, some completely break down for a time, etc. Heck, my bils, sils, and ex GIGGLED through most of his grandmother's wake. I am sure most people thought we were most inapproriate, but we started reminiscing about all the good and funny times we had had with that awesome spitfire of a woman and just got carried away. She would have loved it! )
Statistically, it is usually someone who does know the victim who is the guilty one. I cannot fathom how that would feel-to know that you are under suspicion if you are not guilty. Yes, it is necessary for the police to consider those close to the victim as suspects, but how horrible that must be. For this family, the horror must have been magnified a thousand fold. Not only was the mother assumed to be guilty, but the son was also considered as a suspect. I am sure the whole pageant thing made it worse. Look how many posters have cited it already. Not a choice I would have made for my daughters, but then again, a lot of people make choices for their children that I would not make for my own children, even here on the DIS. Doesn't mean they are bad people; just means they have different priorities than I do.
I feel so sad that the mom died knowing that many people assumed she killed her daughter. My feeling is that if she had, it should have been relatively easy for the police to prove it, especially considering all the public scrutiny of the case. Who among us could stand that kind of public condemnation? I certainly don't think I could have. That family unit must have been a strong one. Her family stood by her until the end. I know countless families that have been torn apart by much smaller crises.