That is tragic. I am sorry that happened to your quilt. If that were to happen with a quilt for my client, I would do everything I could to repair it! A rip like that is not beyond fixing, even if you (the longarm quilter) have to pick out the quilting to make the repair, replace the patch then re-quilt the area. It is too bad you can't just take it back to her. One quilter I know says that a mistake on someone else's quilt becomes a free quilt!