^What do you mean by "Evil Irisa?" The only "other Irisa" who appeared here was her younger self, the preadolescent one who appeared in her visions.
Maybe he means Rynn (spelling?) who appeared at the end?
They possibly need to find a way to visually differentiate the Irathient females more. I have at least one friend who has trouble telling them apart--and I'm not sure I would have recognized Rynn if Irisa hadn't addressed her by name.