Well, I tried the peroxide and guess what I ended up with a hole. I must have put on too much. The mark started to fade but not completely, so I reapplied several times. Now what??
Well I guess I have no choice but to replace. It will not be easy and the backing is a long piece of muslin. I put it together somewhat like quilt as u go. First the middle, then top and bottom and then the sides.
This mark is on the top or bottom panel, so I can probably remove the stitches and the top block, but I will have holes in the muslin and the chances of my getting the new stitches in the same places is a million to one.
I am still considering appliqueing something.
Thanks for all your help.
Mary