This is the illiterate feminist knock-off of Ellis Peters’ Brother Cadfael mysteries. If you were creating a dictionary of literary errors and prat falls, it would very closely resemble this disaster, St. Brigid’s Bones.
https://leeduigon.com/2014/11/06/saint-brigids-bones-a-celtic-adventure-and-a-literary-crime/
Why does anybody write a book like this? Well, ignorance would explain that.
But why would anybody ever publish it? You’ve got me there!