Honestly, Coco is pretty naive for just running after the mage without worrying about anything. That ended up getting her caught in a teleport trap that dragged the others along too. They’re kinda justified in being mad about it, which makes things even worse for Coco’s perspective since she feels like they hate her.
They also explained a bit better about the origin of magic in this episode with the silver tree, plus an introduction to the four fundamental types of magic.
Coco still has a long way to go to earn her classmates’ trust, especially Agathe’s. I feel like Agathe might have some hidden reason for being so harsh on her.