@Marina: it wasn’t semen stains. It was some new technology that says an unknown male touched her clothes. It’s some new touch-DNA.
The DA apologized, and they found male DNA from an unknown male, but that doesn’t mean the family had “nothing to do with it”. There was weird creepy stuff about that whole family from the get-go. I have no idea who killed her, but I still suspect the family had something to do with it.
I think a part of the reason this got so much media play was that it happened to a rich girl and it wasn’t solved right away. How this person gained access when the family is this well-off was one thing that amazed a lot of people. I think people who thought the family wasn’t involved had a sense of “no one is safe”, and people who thought the family was involved thought it was an example of the rich getting away with murder.