A fairy playing Quidditch. LOL. I loved it! And I love how you expand upon established canon facts about this Care of Magical Creatures teacher. Brilliant.
As for the two-part Dumbledore chapter...I enjoyed that one too. All the positions that Dumbledore has are effectively part-time jobs. I doubt that those 3 positions add up to one full-time job. And yet... He has to keep up with all the information flow that is involved with all three positions. And since Dumbledore is such a control freak, he wants to do it all himself. Hence his need of a timeturner, hahaha.