I am looking for a book I read when I was a teenager, it was written in the late 80s or early 90s. I do not remember the title or author, although I think the title has something like guardian in it. It was set in the Elizabethan time period. A lady in waiting of Elizabeth’s is sent away to a guard outpost where she meets a boy and they have adventures with a mystical secret society. Some vague tid-bits that I can remember are: the secret society kidnaps the boy and in the end she rescues him when they are trying to sacrifice him in a ritual. There is a well that pilgrims throw gifts down and ask for miracles and the mystical people sometimes grant them, and she has a sister that there is some sort of animosity between them. Could you smart bitches help me find this lost gem that I have long wished to find again?
“Elizabethan mystics throw crap down wells” does not yield much via Google, alas.