If you have any of your receipts perhaps you could show them to her so she would realize how expensive good fabric is today. Also, visit with any good custom sewing workshop (one that makes draperies & bedspreads,pillows etc.)and you will find that they charge at least $40 per hour for labor. I learned pretty early on not to say yes to anyone's request for "just a little sewing" unless I was ready and willing to do it for free. I do my quilts mostly for family- one or two per year and rotate them- and they are always happy to get one.