So sorry this happened to you and I am sure you were sick to your stomach! Like many of the other QB members, it would drive me crazy and I am sure that if it were yours you wouldn't feel so bad. In my opinion, I would get out the old seam ripper and take out the block and redo it-then hand quilt or machine quilt that small area. One time a friend of mine did not like the way the LA quilter did her quilt so it was rip, rip, rip for 3 weeks (with help of me and 4 of her closest friends!) She had it re-quilted by another quilter and was a happy camper which I think you will feel more content if you redo it. Good Luck.