I'm just telling you she knows the ending.
Her exact words were:
Which is unlikely but I think it's safe to wager that there will be some amount of unpredictability to it.
But it can't be so out of this world that no one's predicted it since the author has stated that some segment of the fandom have guessed the ending but with the amount of theories there are, the only way it couldn't have been guessed if it's a bunch of aliens that sit the Iron Throne.
My two cents, I doubt it'll be King Arajon and Queen Arwenerys of Houses Targaren go marry each other, have kids and reign happily together.
And while a Targaryen restoration is on the table so is a Baratheon restoration and so is a no restoration