After she'd stopped hyperventilating, she was unwilling to leave the bookstore for a little while, but fortunately, that was where she'd been planning to go anyway. She'd got normal Muggle textbooks from a London shop, used and as cheap as possible. In Diagon Alley she could cast reparo on them, and then her parents wouldn't notice the discrepancy between the money she'd spent on them and the money they'd given her. If she had time, she might even read them; she did want to take GCSEs when she was the right age, just on principle. It would support the lie, if nothing else, and it really did seem like it would be a good idea to have Muggle certification as well as magical. Especially if something went terribly, horribly wrong.