Billy Bob Thornton's Daughter Guilty of Manslaughter in Baby's Death
updated 06/02/2011 AT 11:15 AM EDT
•originally published 06/02/2011 AT 08:55 AM EDT
The verdict was handed down last Friday to Amanda Brumfield, 32, in the same Orlando, Fla., courthouse where Casey Anthony is being tried for the murder of her daughter, the Orlando Sentinel reports.
Brumfield had claimed the death of 1-year-old Olivia Madison Garcia, while in her care as a babysitter one night in October 2008, was an accident – and that she had simply fallen a short distance out of a playpen.
Prosecutors said such a fall would not account for the three-and-a-half inch fracture found on the girl's skull and the bleeding and swelling on her brain.
Brumfield will be sentenced in July. She was also found not guilty of a third charge of aggravated child abuse.