Prongslet and Prongsette

Before Harry was born, the Potters had a daughter named Laura. After Voldemort's attack, she was sent to the Dursleys, however, when she was eight, Vernon kicked them both out of the house. They then live on the streets of Diagon and Knockturn Alley until they meet our favorite Lupin-Black twins! Rated T cause I'm paranoid. AU!