I don't know Japanese, but I guess Circe is jealous from seeing Gudao calling Medea cute, or beautiful, or something like that, and now she wants to take back the costume she gave to Medea?
Wh...
Huh...?MedeaIt's unfortunate, but... Actually, could I ask you to give back that outfit?A-Aunt-Sama!?..WhWai... Master-Kun!? This look isn't what you think! Aunt-Sama made me...YOUR OUTFIT MATCHES WITH CASTER OF OKEANOS!!WHOA! IT'S REALLY CUTE, YOU KNOW!!Cu...? N...No, this outfit is much too flashy for me, isn't it?No way! Medea-San, you're beautiful enough that anything would look good!Wai... D-Don't flatter me so much please...!O-I, Medea.