Sorcerer's Stone
...Just as Harry and Ron thought there would be no more visitors, a thin first-year witch appeared at the doorway. She was brunette, like Hermione, but the similarities stopped there. Her hair was straight, and was almost down to her torso. She had perfect teeth, and greenish-grey eyes. She was only eleven, but already easily five-five.
"Can I sit here?" she asked. "The other compartments are full." The boys nod, and she sits down next to Ron. "You've got chocolate?" she said, noticing his full hands.
He nods. "You want some?" he offers, holding some out.
She looks, and settles on a simple candy. "I'm April, by the way," she said, her mouth full. "April Summers." she stared at Harry, as if noticing him for the first time. "You're Harry Potter," she said. Looking toward Ron, she asked, "And you are?"
"Ron Weasley," he replied. He emptied his right hand and offered it to April. They shook.