I think that the quilting is so important -- I have seen quilts "ruined" with poorly designed MQing. The local QS here does a terrible job. I wouldn't take a dog blanket to them. There is a quilter that does a nice job at a different (my fav) shop.
I chose someone here on line because I could see examples of her work. I sent a small baby quit first and then my dearly prized bargello. I usually hand quilt -- right now I am in the middle of 2 that I hope will be done by spring.
By all means, do talk with her to tell her why you are not happy. It may help her to improve. Perhaps she just doesn't have the "artist eye" to enhance a quilt design. And she may also return some of your money
Mim