Bryce's Ordeal
I am kind of confused about Bryce's Ordeal.
In house of Earth & Blood Flynn says that fighting the Nokk would be her ordeal before it even begins. How does he know THAT is her ordeal? Or in general, how do they know what their ordeal is, does something change after they have fullfilled it??
(I have just finished the 1st book and am now reading House of Sky & Breath, so no spoilers beyond please :))