Board Thread:General Discussion/@comment-3418856-20130415050358/@comment-5273628-20130512213551

wikia -- 24.180.61.110,

Lauren is Tracy's biological great niece because her brother Alan's son Franco's daughter.

Lauren is Monica's step-granddaughter because Alan had an affair with Susan Moore. Susan Moore and Alan Quartermaine produced offspring which resulted in Jason and later revealed also to be Franco.

Lauren is AJ's niece because AJ and Jason (and thus Franco) were brothers.