Hello! Thank you for reading and engaging. I was more thinking along the lines of the priesthood raised her for the throne, but because they controlled every decision, every word out of her mouth, every part and parcel of her life, she didn't have to be very old when she took the throne. Just old enough to speak. (You are probably right about the foreshadowing, but it was a shorter piece and sometimes I struggle with that when I don't have a lot of time to edit. )

She is aging, as usual for a human, and has hit the rebellious teenager stage... which is why she is for the first time rebelling against the clergy. And she did it, in front of everyone so the priesthood couldn't sweep it under the rug.

And like another commenter said, she doesn't want another teenager getting involved, so she's going herself. (And maybe she can run away from the priesthood, or arrange some interesting accidents for them along the way.)