I will likely use this, thank you!

I was down to B and E, and I chose E. I understand why B is correct, but I still don't understand why E is not correct. To me, when you negate E by saying that her purpose was not to explore moral questions, the conclusion falls apart. When critics say that she is indifferent to moral questions, how is her purpose, or the reason why she wrote the way she did, irrelevant?