I couldn't finish 'em. Looks like this's gonna get complicated.
Cindy is a boss in Final Fantasy IV: The After Years. Appearing alongside Sandy and Mindy, she and her sisters are exactly the same in Final Fantasy IV. Cindy will primarily use physical attacks and counters all damage on her with a powerful physical, and if either Sandy or Mindy are defeated, she will revive them with Reraise. Therefore, to end the battle the player must focus on defeating Cindy first.