Maddie And Mackenzie Ziegler Say GOODBYE to Dance Moms FOREVER! Back Now that Dance Moms season 5 has returned from its mostly non-existent hiatus, it’s time to see what kind of drama Abby Lee Miller can stir up. This week, it looks like Abby’s going the sibling rivalry route since her favorite, Maddie Ziegler, will be competing against her sister Mackenzie. This week on Dance Moms season 5, episode 23…