Quote Originally Posted by Adeacia View Post
This here. Also, though Matoya did say that, there was no timeline given. It could simply mean she'll leave 5 years less then the average lifespan of her kind. It's not something that actually has to be directly addressed in the story itself.
They do deliberately mention it takes a toll on her lifeforce though, in story telling it would be strange to mention something like that and do nothing with it. I expect it will come up again, there have been plenty of things in the story they've brought up, then concluded several expansions later or more.

I doubt they'd kill her off, she's in enough of the story to have plot armor at this stage, but my guess would be it will start showing effect when it comes to the final battles in Endwalker. That's sure to be a lot of strain.