Emma Watson was 10 when she started filming Harry Potter. She was 21 when it ended. The same set, the same crew, the same kids growing up side by side. To her, work meant family. Then she grew up, expected it everywhere she went, and it broke her.She walked onto her next films looking for that same closeness, and slowly worked out that almost no one else had come for it. They came for the part, the paycheck, the shot at something bigger. She said it through tears: looking for friendship in Holly