Bagsy Beetlehorn and the Thorned Gauntlet

Bagsy Beetlehorn would rather stay in her room, fiddling with her inventions and messing about with potions, but if she wants to overcome her worrying inability to cast spells, she'll have to attend Hogwarts, even if that means embarking on a life-threatening quest for a wish-granting gauntlet or, worse, interacting with human beings. 1st of 7 book, all original sequel series to HP