They didn't get the press because the parents aren't all that media-savvy. It's heartless, but it's true. They didn't get the foundation together, no hounding, the family wasn't manning the phones, the pictures weren't all that compelling, and the felon father certainly didn't help matters. Basically, if your family runs with a bad crowd, people believe that you shouldn't be surprised when bad things happen to your family. The Danielle van Dam story has reeked of that, but swingers make for better news than thieves. Also, look at the girl from Philadelphia who escaped from her kidnappers a few weeks back - when it initially seemed to be a random grab, it was a leading story, but when it came out that the family dealt drugs, the uncle had been shot by the rival gang in February, and the father had stolen drugs from the kidnappers, the story dropped off the news in a day. Again, people think that when you do bad things, you should expect bad things to happen to you, and that expectation makes it less newsworthy. It is an unfortunate fact of life.
It is easy to blame racism, but having watched Rodney King, OJ, Amadou Diallo and other African-American individuals on the news for literally years on end, I find it hard to assume that racism kept a missing black girl off the news.