Michele Hunter was found guilty Monday to aggravated assault and endangering the welfare of children.
Prosecutors said Hunter pushed William "Billy" Hunter Jr. in 2011, causing him to hit his head on the floor.
The four-year-old suffered severe brain damage as a result.
Hunter will be sentenced on March 19, 2014.
Copyright 2016 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.