Secret sister

Ariana and Talia are looking for Iris, waiting to tell her all the stuff about her being the rightful air to afedia during the auditions, for the bands are LoliRock. There’s an older girl watching them behind the in the audience without aria and Talia, not knowing she keeps trying to be mysterious, but Iris walks up to her and ask her are you following me, but she keeps denying it later on after they save their parents from Greemore she finds out that that girl is her older sister