Unfortunately, I don't see how you could repair it, it looks beyond help to me. And, in the tone of agreeing to disagree, I've seen mass-produced (aka made in China) quilts that, after 1 or 2 years and several washings, fall apart EXACTLY like that. Tags can be removed. But, if you like that quilt, who cares where it came from! Patch it as best you can and love it!