Angel your unprofessional behavior has bitten you in the ass once again. I think that if you ever want to get a good reputation as a trader you need to do whatever you can to make things right. By coming onto a public message board you are no better then your buyer. Saying that she is crazy and taking this public has probably lost any sort of good reputation that you might have had with anyone in your contacts.

If I had heard this from a friend of mine (from a buyers POV) I would NEVER do any sort of business with you at all. Good business might bring you a few costumers but any sort of bad word will drive away people in throngs.