Fan Casting Karen Starr in Superman 6

Ever since Power Girl found herself on this Earth, she has stayed distant from Clark, even denying his invitation to his and Lois' wedding (although she watched from afar). Throughout the movie, she accepts her part in this family, as Superman affirms that, while he may technically not be the Superman from her Earth, in his eyes that doesn't matter; she's just as much his cousin as Supergirl is.