I am not an expert on shows or quilting, and I know you are sick about this, but I think perhaps naming it to include the shadow instead of trying to do something to fix it after it has been so beautifully quilted, she did a beautiful job as did you fabulous quilt. This might bring out the mistake more, Perhaps something like "Shadow Framed" or something to include the shadow in the name. But I would definitely enter it and as others have stated if it is for your daughter she and others would probably never notice unless you point it out and she will obviously be so blessed that her mother did such an outstanding work of art just for her. I am sure if certain shows and perhaps in all that judges might notice, but if it has the word shadow in the name they may consider this as part of the finished quilt. Who knows about judges. I am still working on getting the bleed out of my daughter's wedding ring quilt I made for her, that occurred after the first washing. I am still sick about that. But I would definitely enter it, as far as many are concerned, you rate a grand prize ribbon for the beautiful work on this . Good luck in what ever you do, let us know what you end up with, Gerbie