"Useless fucking waste of wood pulp!" she shrieked, tossing another hapless tome across the room. Hermione immediately felt guilty and hurried over to retrieve it. Harry had obviously spent a great deal of time and effort - not to mention a good proportion of his fortune - assembling this vast collection of books just for Hermione's pleasure. It would be quite the show of ingratitude for her to break half of them through her own frustrated anger.