The 47-year old-woman is accused of beating, burning and biting the children.
Goldine Williams is in Chicago police custody on a $200,000 bond. Along with the beating, Chicago police are confirming that the children told them that they were forced to eat cat food.
Williams is accused of beating her 6-year-old grandson and 5-year-old granddaughter. She was in court Thursday facing two counts of aggravated battery on a child.
Chicago police confirm that the alleged abuse happened in October in the 1400-block of East 68th Street.
Williams, police confirm, beat her grandson with a plastic sword cover and extension cord. They say she also burned her grandson and granddaughter with a hair iron.
Residents in the South Side neighborhood say Williams use to live on 68th Street but moved away a few months ago. They say she was quiet and didn't really talk to anyone else in the area.
Police say Williams now lives in a South Shore apartment building in the 7500-hundred block of South Kingston. Residents who answered the buzzer confirm that but declined to answer any questions about the grandmother.
According to the Department of Children and Family Services, back in 2008, the children's biological mother was investigated after allegations of neglect with the same two children. Goldine Williams was granted custody. Now the two children are with different relatives once again.