The Meaning of a Flower

Astoria Greengrass was sick of the war. Being at Hogwarts while it was being run by Death Eaters, she was in hell. With Theo's help, she sends herself back in time so she can try to end the war before it can restart, but she's sent farther back than intended - to 1960. Dumbledore interferes and places her with the Evans family to grow up as Lily's twin sister.