Quote Originally Posted by Cleretic View Post
Even in-universe, both the Watcher and the Twelve seem pretty sure she's gone and are acting accordingly. And I'm struggling to think of anyone in the game world that's more knowledgeable about this specific fact than them.
After beating 6.0, if you go back to talk to the Watcher, he says "The Loporrits have told me of your victory over Meteion. It is a relief to know Hydaelyn's wish for Etheirys and Her people was granted. She is not here to revel in your victory, but so long as there is life on Etheirys, Her spirit shall live on. In the soothing summer rains, and gentle spring breezes, She will be with you always." While she may not be physically present, the Watcher seems to imply that her will lives on among the inhabitants of Etheirys. I've also seen people interpret this statement as meaning she has been incorporated into the star itself.