Mischief Not-Quite-Managed (Currently being revised and edited to the extreme)

{I do NOT own Harry Potter! All credit goes to J.K. Rowling for anything besides Stella, Rosalind, and Katarina!} Stella Lupin, Rosalind Potter, and Katarina Black are the daughters of some of our favorite Hogwarts pranksters - Remus Lupin (aka Moony), James Potter (aka Prongs), and Sirius Black (aka Padfoot). All...