Billy Bob Thorntons Daughter Gets 20-Year Term

First Published: October 6, 2011 11:23 AM EDT Credit: Getty Images ORLANDO, Fla. -- Caption Billy Bob Thornton attends the premiere of Manure held at Eccles Theatre during the 2009 Sundance Film Festival on January 20, 2009 in Park City, UtahThe estranged daughter of actor Billy Bob Thornton has been sentenced to 20 years in prison for the death of a friends 1-year-old daughter during an overnight stay at her home. Amanda Brumfield was sentenced Thursday, four months after she was convicted of aggravated manslaughter of a child. She was acquitted of first-degree murder and aggravated child abuse charges. Brumfield claimed that Olivia Madison Garcia hit her head after falling while trying to climb out of a playpen. Prosecutors said it was impossible that a fall from that height would cause a three-and-a-half inch fracture on the girls skull. Copyright 2011 by NBC Universal, Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.