There's a girl called Hannah who always seems totally calm. When she loses a game, she shrugs. When she's left out, she acts like she doesn't care. When something goes wrong, she just says "whatever" and moves on. Other kids think she's really chilled out — maybe even a bit cold. But you sat next to her once when she thought no one could see, and her hands were shaking. You're starting to wonder if "not caring" is really what's going on with Hannah — or if it's just the face she's decided to wear.