Riley's world

This story is about a girl called Riley and she loves her friends and family more then anything she has a perfect life. living in a mansion as only child with her parents, going to street dance and acting school, shopping every Monday and Friday with her friends, has a amazing single life, but nobody knows her little secret of her and her secret sister in the other world she lives in with mysterious people and creaters...  which world is real? and which is not? read on to know more we all want to know ;)