>>16787596Because he was in a relationship with Iris. You saw what she did to those three girls who made fun of her stupid Emolga. If someone went after her man, you better believe she'd have Dragonite and Excadrill on their ass.
Her leaving at the end of the saga was either because Alexa defeated her and stole her man, or because she was bicurious for Claire.
Either way, she'll come back to Unova in order to get Ash back.