See if you can set up a 'filter' in your e-mail program. The way I understand these to work, they send stuff immediately to your trash without going through the rest of your e-mail. If not, blocking your friend's address, as previously suggested, should keep them from making it off the server and onto your PC, right? Obviously, you have talked to her and been polite, but she doesn't care about your computer situation, and I, personally, would find it very rude that she would continue sending unwanted e-mails that are so huge after having that conversation.