"I know about Lily." said the girl. Severus froze mid-footfall. He felt as though he'd gotten the wind knocked out of him. "She's my mum." her chin lifted, her eyes clear. "She wrote me a letter… I got it just before I started Hogwarts. She told me all about you… you're the only person she mentioned, but I guess that makes sense, since you're my father. Who else was she supposed