Not everyone knows of all the "master quilters" and shows and "experts" that are out there. Even working in a LQS does not mean that you would know of this. I think you had an opportunity to educate and encourage someone to learn. I don't see the "quilt police" in this person; I see someone who was not exposed to information that you had. It was very kind of you to share with her your knowledge and perhaps this will afford her more personal growth.