I meant in general lol, as in main continuity Catwoman who is interested in settling down with Batman (eventually?) does have a strong motive for killing the Joker, but less so after Bruce is dead (presumably not at Joker's hands). In this story, the reason for Selina caring so much about what Joker did to Andrea to the point that she harbored a desire to kill him for the rest of her life, better be good.