On an Internet site, 15-year-old Alyssa Bustamante listed her hobbies as "killing people" and "cutting." It may have sounded like a teenage exaggeration, but authorities say she fulfilled her words.

Even as new details emerge about the teenager charged with killing 9-year-old Elizabeth Olten, many facts about the crime continued to be kept secret Thursday — and may never be released by authorities unless Bustamante goes to trial for murder.

Bustamante, who had been in juvenile custody since leading police to Elizabeth's body Oct. 23, was certified Wednesday as an adult and indicted on charges of first-degree murder and armed criminal action. She is accused of strangling Elizabeth, cutting her throat and stabbing her.

Online court records showed Thursday that a public defender assigned to represent Bustamante filed a motion seeking to have her placed in a state hospital for immediate mental health treatment.