KANNAPOLIS — A woman has been charged with the murder of her 4-year-old niece after autopsy results were released. Police responded to an emergency call on Old Rivers Road on Nov. 19, finding the child deceased. Vanity Rubystine Williams, 31, was initially charged with felony child abuse on Nov. 20, after it was confirmed the child had been in her care since October. Following preliminary autopsy findings on Nov. 23, Williams was charged with first-degree murder. She is currently in the Cabarrus County jail.