Special taste
I think you must have to have a special taste in order to appreciate this, and I am lacking in that kind of insight. It is more myth than novel, more poetry than narrative. Its characters are stylized rather than naturalistic, and it reminded me of the morality plays I studied in English Lit. It is not at all like her only other novel, The Living, which was long and almost Victorian. The plot involves a love that transcends infidelity; the emotional environment tends to perhaps the 60's. If you are very into Annie Dillard, you might like it, but it is not your usual book