Doug Racine, secretary of the Vermont Agency of Human Services, said Governor Peter Shumlin has asked him to get an outside evaluation of the role of the Department of Children and Families in the death of a 2-year-old girl. Dezirae Sheldon died Friday, two days after she arrived at a hospital with a fractured skull. Her 31-year-old stepfather, Dennis Duby of Poultney, pleaded not guilty to second-degree murder Monday in Rutland. Racine said Tuesday that no timeline or details regarding the external investigation have been set. Racine said that the seriousness of the case requires an independent review and that the state owes the child and her family an investigation.