I think you should take it to her and explain to her just like you did here in your post. Give her the chance to make things right, but if she doesn't, just don't ever use her again. If I were doing a job and knew that several people thought it wasn't up to par, I'd want to know because bad word of mouth is a definite business killer. And you of course have a right to the kind of job you paid for (BTW, that does sound rather high if was only for the quilting).