Wisconsin police say a woman backing out of a driveway ran over and killed her daughter on Christmas Eve.

Officials say the woman was going on a trip to get holiday candy. Officials say the 24-year-old woman had her other daughter and two sons in the car. She didn't know her six-year-old daughter was outside.

A police detective in Sheboygan says the death is "very, very traumatic" for the family. No charges are expected.