Sammy Jo Carrington (born Samantha Josephine Dean; formerly Fallmont) is a fictional character on the ABC television series "Dynasty", created by Richard and Esther Shapiro. The niece of central protagonist Krystle Carrington (Linda Evans), Sammy Jo marries and has a son with Steven Carrington (Al Corley, later Jack Coleman). Using only the above description and what you know about the world, "Sammy Jo Carrington's mother is Krystle Carrington's sister. " is definitely correct, incorrect, or inconclusive? 