You handled the "quilt police" with grace and dignity. At 80 years, she probably doesn't have a filter any more, and answering her with a sharp reply probably wouldn't have made any difference. I hope when I'm 80 that I will still be going to quilt stores and buying fabric to add to my stash. I believe that the elderly have the right to say anything that is on their mind even without a filter, and we just need to listen. We can chuckle about the comments after they leave. JMHO
Sue