Deanna,
I don't think you are cheating at all. I totally agree with you, why waste fabric and then also create more work for you. I think quilting can be done in so many ways-no right or wrong. I wouldn't bother telling her what I was working on anymore if that is the response that I got. Let it be YOUR hobby and don't let anyone tell you how you are doing it wrong.
I can't wait to see pictures of what you have created. I am not perfect in any way of quilting. I enjoy it & know that I get better at it as I go. =)