
Let's say she reveal that she is the saintess
This is most likely what's gonna happen..
Temple , royals would want to get her and bring her to their side..
If that happens she would be forced to purify the demons since humans and demons are against each other
But of course the demon king wouldn't allow such a thing to happen
So very likely there would be war between humans and demons ..
As what the ending of the story that she knew plus the 3 sisters on the shadows her husband would die from the hands of his ex.
If the war broke out then the story still leads from what she's been changing..
Man, she can just tell people she is the saintess and continue to be married to the demon king. That itself would make people be a little more comfortable with demons I guess. Also, if she can talk to people and be more truthful about what she knows, she can stop the loop and the sisters who control destiny and life. But it's a webtoon, it's going to drag, and have more miscommunication and misunderstandings:) well, anyway, have a nice day ^^