It had been an easy commitment to make when she’d been eleven, but the fulfillment of the promise had proved difficult. Knowing she would be woefully behind all the other non-magical students—a sensation she’d never been comfortable with—she had spent seventh-year cramming her head with Muggle knowledge. She had been glad for the tremendous workload. There had been no room in her mind for grief, and exhaustion had kept the nightmares at bay.