I'm in the throes of hand-quilting a quilt that's going to be raffled off for charity. The blocks are crazy blocks from a block swap. Unfortunately, I didn't realise until after basting that there's a problem with one block. It wasn't sewn in either the standard method of piecing, traditional crazy piecing, or foundation piecing. Instead, she laid the pieces of fabric down and then did a zigzag over the raw edges. There's a large heart shape covering most of that block (fused on, so no hope of quilting through that part of things. Basting was a nightmare at times), so I didn't spot this until the fabric had already started to tear away from the zigzagging in several places. I tried embroidering over it with blanket stitch, but it still looks very frayed and I wouldn't dare wash it. Right now I've ordered some 6mm grosgrain ribbon in hot pink and was planning to stitch that on top of all the "seams", probably using some sort of hand embroidery stitch (this is all hand-sewing). Do you reckon that's the best option, or is there something else I could do?