Quote Originally Posted by Donjo View Post
I think the only thing Y'shtola's little trip through the lifestream did was render her physically blind. She "sees" now by sensing the aether around her, which is apparently a poor decision according to Matoya. While she does mention that she has a keener sense of the aether around her, it's probably just the phenomenon of other sense becoming stronger to compensate for a lost one.
I think the importance of the Matoya conversation was more that, "you're lucky that's all that happened." An alternate Warrior of Light being created as a champion of darkness following the Calamity would work with the echo.