Given that she took the role from her mother, I assume she has no idea who her father is. Here's hoping she has a boy. After saying that I assume the service will continue til she has a girl that is old enough.
Side note - What purpose did that serve? There was a small religious component, as they live in the shrine, but what else? Good crops? Blessed weather? No wars?
No purpose beyond having somewhere for the men to sate their lust. This is the sort of village that needs to be introduced to the finer qualities of napalm.
Eh, this sorta gave me a "Blue-Eyed Girlfriend by Butcha-U" feeling for some reason. The reason I guess is that in this tale, I can see things going completely off the rails like it did there.