Zombies to The Left

Jack Katz threw her head back and let out a long, loud whine. “Oh, whhhhhyyyy? It's not fair.” They were drinking coffee in one of the many sidewalk cafes on the Cairns Esplanade. If people heard and looked at her whining, Jack didn't care. What her sibling wanted was doomed to turn into a mess.
“This isn’t about you, Jackie,” her sister Nancy told her.
“I bloody know that.” If it had been, her family would be miles away from her and not in her home town. “Why have the wedding in Cairns? What did Cairns ever do to you?” Jack liked having the distance that separated her from her family. She felt they worked better this way. As dysfunctional families went, they were the prototype.
“You know Sydney is suddenly too hot for the Katz women.”
“You borrowed money from the loan shark, too?” Jack had thought her sister was imbued with more sense. Nancy Katz was a good girl. She didn't run around killing zombies with an axe nor did she act like their youth obsessed, lipo-sucked mother, Cheryl Lee.
“No, but mother used my name to borrow some cash and now I’m getting harassed to pay back money and that means we can’t have the wedding in my hometown of Sydney.”
“Bloody Cheryl Lee.” Their mother was a total screw up whose actions rebounded back on them. “Did you know she had the hots for a zombie?” Jack had watched on with a mixture of repulsion and what-the-hell as Cheryl Lee had dated Morcomb Sprout, half zombie and half human, who was determined to destroy her hometown of Cairns. Of course Cheryl Lee had been too dense to realize the half breed monster had been only interested in pissing off her zombie hunting daughter, Jack.
Nancy shrugged. "Zombie or not, he'd be no different to anyone else she previously shagged."
Well, that was true. Her mother had been with some shockers. "She didn't get to shag him. I told her a zombie's dick would fall off during sex."
Her sister looked appalled. "Eew! How do you know?"
"Just a theory."