"Let the 50th Hunger Games begin!" Katniss Everdeen wasn't chosen for the 50th Hunger Games. Her sister was. "The nightmares never go away." Watching 47 die does leave an imprint. "The Victor of the 50th Hunger Games, Katniss Everdeen of District 12." One that never goes away.
Hermione Granger had a secret. She was the daughter of one Sirius Black. When Sirius is cleared after Hermione rescued him from the veil, she can finally reveal her identity. She is back at Hogwarts as a completely different person. She is the daughter of Sirius Black after all.