Chicagoist gets a hat-tip for providing a link to this story. I did a Google search to find more stories about her and I found a link to this blog, Bonnie's Blog of Crime, that links to other stories involving this girl's case. I would suggest you go there for a compilation of stories.
BTW, her disapperance occurred apparently in the same neighborhood that the police found two burned bodies in trashcans last week. I really hope that they find this girl!!!