POP!

The little elf appeared suddenly in the back of the arithmancy classroom, shaking her head and flapping her ears. "Tinka brought, Missus Professor Tanner." But look, the Muggle Studies woman was here and talking. Tinka must be veeeery quiiiiet.

Silently she made her way through the rows of desks and found the girl she sought. "Psssst, special delivery for miss," she whispered to AJ Valentine, setting the plate on the desk. "Enjoy, miss!"

And before the girl could say anything, the little elf disappeared with another POP!