I guess I don't see what's so bad about what she said. I mean at least she took some interest in what you are doing.
I bet she doesn't do any crafts herself and has no clue as to the quality you put into your quilts.
She gave you a very strong hint at what she likes, though! I'd take that and start mentally making her something in her taste. Ask her more questions about why the back attracted her.
Someone once told me that the reason we say "I take offense at that" is because we always have a choice. We can choose to accept the offense or we can refuse it. If we refuse to be offended, the other party cannot force it upon us. This thought has really helped me out.