Hermione requested the guards be ones that knew her story. Rabastan, Rodolphus, Marcus, Adrian, and Cassius volunteered instantly. Varl when above and beyond creating an elaborate buffet for breakfast. Once everyone served themselves and sat around the table, Hermione repeated her story for Harry. She finished with, "He placed charms on a lot of people, including you. He made you predisposed to trust certain people and dislike others. Healer MacLellan found these charms and some potions in your system."