The story of Saturn black aka the prom queen

Saturn Black is the twin sister of Sirius Black and Older sister to Regulus Black. The only daughter of Walbridga and Orion Black. When Sirius runs away she left alone broken and depressed. When they go back to Hogwarts everyone notices how the warm girl from Hufflepuff is broken. Saturn best girl friend Marlene drops everything and starts to make sure she is okay. While going through stuff Lily helps Marlene get the old Saturn back. But when as time goes on Saturn a girl named after a planet and Lily a girl named after a plant start falling for each other.