A sad wife

Sib is the human daughter of a cruel fae king. With her stepbrother being given the title of heir to the throne, Sib has time to go undercover and secretly monitor and fight in a nearby rebellion group. But when the rebellion group decides to move further with their plans to overthrow her father, will she still be able to remain undercover? and is she the only one?

disclaimer:
lots of depictions of dagger use
light mention of sexual harassment

((ongoing-- plans for: forced proximity, enemies to lovers, etc))