It canīt be proved true or false sir bahamut. letīs take an example, what about taking exactly the same FFVIII, but , lets say that nowhere in the game laguna is mentioned in text as squall father, nowhere, but some shy guy suddenly says , hey laguna looks like squall, why ? and then the rest jump over him saying therīs no prove , every character looks the same !.

I personally donīt think rinoa resemblance to ultimecia is the strongest point of the theory, because square keep using sort of a patron to the faces, but, you could analize every single point of theory, and the only thing that would sound racionally to you is a dialog text saying "rinoa is ultimecia".

You have said it for me bahamut, normal life spams but they must pass the powers to be able to die, so, if they donīt pass the powers, they donīt die, in peace or not, they donīt die. and you see in the game how ultimecia is defeated, but no witch dying for aging is named.