I think she owes you half of what she sold it for....at least. Since 90 percent of the fabric was yours and you also have to provide the backing and batting plus do all the quilting/thread and you did a lot of the cutting, this quilt is more yours than hers. Tell her what she needs to do in order to make sure it is in the right condition to be able to quilt it. If I were you, I would even tell her how much fabric SHE needs to buy for the backing and also the batting.