Just a speculation: the priest is gonna sacrifice himself to save her

I would kms first

It's a wrong diagnosis

I think this too

I'm not that sure about the wrong diagnosis. It may have been correct, but we've seen Doha frequently treating her with his divine power because he noticed her being ill. So, it's possible that she was actually dying but little by little she got cured.

I think it's probably something like her body can't contain all that magic type of diagnosis. Because she's not ill and she never looked like she was, so yeah.