After an 11-year-old South Carolina boy fatally shot his 10-year-old sister as they played with a gun, their mother has been arrested.

The Post and Courier reports police say 30-year-old Bernadette Renae Owens is charged with unlawful conduct toward a child.

They say she left the children alone Oct. 5 in an unfurnished home littered with feces and food, and the loaded handgun was in a laundry basket on Owens’ bedroom floor.