Hermione perched on the table in the kitchen at Grimmauld Place and watched Harry consult his purloined Potions textbook.  That she owed much of the pain-free time she'd spent pre-Draco while afflicted with the Veela strain to Severus Snape annoyed her.  Blast the man for being brilliant.   She preferred to be able to just hate him without having to acknowledge he'd had good qualities as well.