My daughter received a beautiful handmade tablecloth, white linen with white cross stitched pattern. The woman who made it told her not to wash it until she needed it. That was 8 yrs. ago and now she wants to use it for a christening party. Unfortunately the pattern markings are not coming out, they are blue. She has tried several different things, oxyclean, color safe bleach, detergents, etc. No luck. Some have faded but others remain. Any suggestions for removing old pattern markings. Thanks.