That is a gorgeous piece of work and to be honest, $200 seems a reasonable asking price. I think that you would do better to advertise it and get the right price for the work you have done. If the lady does not wish to pay for the work then it's her loss. Here are a few links on pricing quilts you may find helpful.
http://www.ehow.com/how_5051349_pric...ade-quilt.html
http://smallbusiness.chron.com/price...ilt-39595.html
http://www.lovetosew.com/pricehandmadecrafts.htm
http://www.ehow.co.uk/how_4843022_se...de-quilts.html
I hope you have great success in finding a proper buyer for your lovely piece. Best wishes.