That's correct. Cynthia stated the mother was no one we knew (that is no connection to Lorimar Dallas) and she was long dead. Beggars the question how this long lost daughter was going to be explained on TNT Dallas. How did she become aware she was a Ewing? Was she informed of her parentage from a dying grandfather or grandmother? Perhaps this long lost daughter of JR was raised by an evil step-father and he blurted out during a heated argument she was a Ewing. Of course we'll never know.