I'm Remus Lupin's Sister (Marauders Fanfic)

Remus Lupin had a sister. You didn't know? Well, here I am, at least. My name is Caroline Lupin, and I'm Remus' twin sister. I'm also an animagus, just look for the fox. My friends are James, Sirius, Peter and Remus, of course. If you're a Slytherin, get the hell out of my way. Maybe I can be cocky some times, and not likely Remus at all. This is our fifth year at Hogwarts. But this year, something has changed. This year, I have something to do. Something important. So important that I can't even tell my friends. Welcome to a new year at Hogwarts!