Buyer has changed their mind.....a week later

I recently sold a piece of coloured glass. The lady received it and left me positive feedback.

A week later I get a message telling me that I have mislead her with my description.

I sold the glass bowl as purple / amethyst glass. She believes it is cranberry in colour.

I put 8 photo's in the description. I also photographed it in different lights with different backgrounds.

I think this is crazy, I did not set out to mislead any one, it is purple glass, more to the point, the photos speak a thousand words.

I am not sure what is going to happen, does any one have any suggestions what I should do?

Thanks