Should I have to refund someone because they didn't read?

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I sold an e-book over a week ago on Tophatter. I got a message from the buyer saying that they hadn't received their book yet and I told them I would resend the e-mail because it probably went to their spam and would be impossible to find. She sent me another message saying that she didn't know it was an e-book and that she wanted a refund. There are two problems here, one possible, one definite. The possible is that I sent the e-book to her over a week ago. She has had time to download it, read it, and possibly even resell it. The definite problem is that the word e-book was in the title. This is a person buying an e-book. You can't tell me she doesn't know how to read. I can understand if I had only put the fact that it was an e-book in the description, but I put it in the title: "Blogger's Guide to Profits e-book w/ reseller rights" was the title. She asked for a refund and I am debating on whether or not I should be obligated to refund her because she didn't read. What do you think?