I try to keep my cool but

Honestly? She wants to tell the Headmistress to kindly sod off. That she is too old, a proud Hufflepuff and not stupid, and that Susan can help her catch up. That seeing yellow eyes hasn't made her any less determined. She nods curtly instead, hands gripping the fabric of her skirt so tightly she hopes it might rip. "I understand." (Hannah has to repeat a year. She's not pleased.)