There’s an essay and long pile of comments on Sarah Monette’s LiveJournal about the character of Susan in the Narina books. I don’t have time to read it all, and can’t remember the books well enough to participate in the discussion, but some of you might be interested to do so.

I do, of course, remember being furious when I read it the first time, and I’ve never forgiven Lewis.

As to “the sin of Eve”, as I recall, there didn’t need to be any particular sin involved. If you read some medieval theologians then women are evil per se. Sorry, no references, my library is in California and teh intrawebs are far too full of misogynist blogs to be of any help.