Ocoee Police Department, Stefanie Keenan/Getty Images
Billy Bob Thornton's estranged daughter, Amanda Brumfield, has been found guilty of aggravated manslaughter in the 2008 death of a 1-year-old girl in Orlando, Fla.
Prosecutors say the 32-year-old was convicted last Friday.
Brumfield was accused of killing her best friend's daughter while babysitting for an overnight stay in October 2008.
MORE: Billy Bob's daughter indicted in babysitting death
Brumfield said the child was trying to climb out of a playpen and hit her head, and the defense argued the fall may have caused her death by aggravating a previous injury.
Prosecutors shot down the claims, saying it's impossible for a fall from that height to cause a 3.5-inch fracture on the girl's skull and the bleeding and swelling found in her brain.
Brumfield was acquitted of first-degree murder and aggravated child-abuse charges. She is expected to be sentenced in July.
(Originally published June 1, 2011, at 7:07 p.m. PT)