(NewsNation) — Stephen Smith’s mother has been fighting for more answers in her son’s death ever since South Carolina authorities discovered his body in the middle of a road in 2015 and ruled his death a hit-and-run. An attorney representing Stephen’s family announced Tuesday that the state no longer believes Stephen was killed in a hit-and-run accident and reversed its ruling to homicide. “This is what I’ve been waiting for,” the teen’s mother, Sandy Smith, told NewsNation’s Chris Cuomo. While officials initially determined Stephen Smith was the victim of a hit-and-run in July 2015, his family doubted that ruling from…