The priest is actually really excited to explain Christianity to a foreigner! God in his infinite wisdom and mercy calls upon him to spread the Good Word, after all. Christianity is definitely a monotheistic religion! There's a lot of emphasis on helping others and having faith that things will be better in the end, and how you will get into a good afterlife if you are virtuous.
The chaperones-having norms come from the religion - according to this priest the only reason one should ahem ahem is if you want children, though he dances around actually saying this, limiting it to vague comments about possibly getting 'more sensible' clothes. God uses angels instead of exalted as instruments of his divine will. He doesn't explain how witches fit into the picture.
Jesus Christ is some kind of avatar of God, and sacrificed himself and suffered for everyone, even those nasty- er, misguided heathens on other continents. The important book is the Bible and she can almost certainly buy one cheap, they're one of the first books the printing presses started mass-copying!