Renesmee's twin sister

Renesmee Carlie Cullen had a twin sister named Annalie Rosa Cullen. Renesmee gets all the attention yet Annalie only gets attention if she's in trouble. What happens if Annalie runs away, leaving everyone clueless of where she is. What will happen to Annalie? Will the Cullen's find Annalie? Will they punish her for running away? Or will they start to give her attention too? Find out by reading this!