"Dumbledore gave me a potion to make me smarter and he gave me books ahead of time. He also gave me past tests so I knew what to expect. He wanted me to be the smartest witch to show all these nasty purebloods that a muggle born is smarter than them. I also made sure Harry would never overtake me academically with mild compulsions. Dumbledore had someone who owed him and that person gave me the exam questions so I could ace them." She snaps her mouth shut, she can’t believe she just confessed.