Mary Butterfly is Star's Sister, Star and Mary was separate for Star causes... While Mary is responsible and not coming for all causes Mary decided to Visit her Sister Star.. Since it had been a month since she's never saw Star.. Mary begged for her parents aka as queen Moon and King River.. Queen Moon allow Mary to visit Star..Mary was excited and pack her things.. ------ Hey guys! Yandere_Katty here! Soo... This is just my Oc while my imagination came out of my mind and saying make this book! Make this book! So I had no choice I made the book! Lol! My mind can't help it! So I yeah.. Not like I'm keeping Star as a Sister.. So if ya want to be Star's Sister make your own book like mine! Maybe I can read yours! :D Anyways enjoy my book! Byessss