Renesmee's Twin

Renesmee was not Bella and Edward's only child. She has a graceful, beautiful, kind, and lovely little sister. Everyone loves her, she's the heart of the family. She has Edwards human green eyes and Bellas brown hair. She doesn't get imprinted on much to everyone's relief. She has Renesmee's gift (since their twins). She has extra beauty like Rosalie. Her real gift is that she can change her appearance to look like anything or anyone. Remember when I said she wasn't imprinted on, that's because her mate is a part of the Volturi. How will the others react? Who is her mate? Is it a king or a guard member? How will it end?