He said he also interviewed two witnesses at the house — the homeowner, who also lived there, and his girlfriend. Sapetti said there were no witnesses to the fight between Osborne and Kern, and that the homeowner called 911.

The detective said he learned that Osborne was prescribed medication, but that her mother didn’t think she’d been taking it.

Rebecca Osborne, Emmaline’s mother, told The State Journal-Register on May 12 that her daughter had problems controlling her anger and that the drug Zoloft had been prescribed for her about a year ago. She said Emmaline often refused to take the medicine.

Sapetti said that Osborne was employed, while Kern was not. Rebecca Osborne told the newspaper that her daughter was employed as a kitchen worker at Brother James Court and was irritated that Kern wasn’t working or contributing to household expenses.

Osborne is being held in the Sangamon County Jail on $2 million bond.

Contact Chris Dettro: chris.dettro@sj-r.com, 788-1510, twitter.com/ChrisDettroSJR