I was going to say she might not have known what goes into a quilt in both labor and money for fabric, but then I saw that you wrote she's a quilter herself. It seems that she might well have taken advantage of you and she needs a lesson in reality.
I guess at this point, I'd be honest with her and tell her that you will make the quilts, but this time you'll have to set a price to charge her for them to cover your time and expenses.