Letty wrote:E.F. I guess I should have said, who was Karen/Karin metaphorically?
Ah, who indeed? Kali? Lilith? Martha Stewart? Dunno. You'll recall that during the climactic scene by the swing, she says she is known by many names. Perhaps the key, if there is one, is that Alan comes to know her in her essence rather than in her symbolic identities.
That reminds me of something I've often mulled over: The morning after that scene, Karin has no memoryof it. I suspect that it was another of Alan's psychic visions, and that raises the question of to what extent Karin is aware of the paranatural events of the novel.