Dice's Favorite

Did I get it right???, I mean now that Reliana(original) is in Beatrice body known as extra and bestfriend of the real Beatrice,then one of them must die for other one to live. Does that explain that the real Reliana of the story is jelous of her bestfriend Beatrice(original) so she use magic to get someone else happiness. Where is the real Beatrice? Then... How about Vivian? Wait! Is she even the real Vivian now!! Ahhh! I doubt it