Doing so is just going to call attention to the comment

I have a situation I could use a little advice on. I sold something a few days ago and got a positive feedback with a negative comment to the effect that the item looked better quality in the pictures than it did when they got it. It's her opinion as far as quality and I won't dispute that except to say that the item was described exactly as it is in material and how it was made and it is in fact very good quality. But that's a difference of opinion and I would have been happy to issue a full refund including shipping. I haven't had many complaints, but when I have, I have always worked things out with the buyer. I'm a little annoyed the buyer didn't contact me and give me a chance to make it right, but I digress.

Anyway, so my question is, what's a nice way to respond to the negative comment. I was thinking something like; "Would have refunded if buyer not happy but was never contacted" or something like that, but I can't work out the wording, it just doesn't sound right to me. Or is there something else I can say?