Well, more like proved the possibility that the shawl was in fact from the victim, given the material, design, and the fact that the mtDNA matched a descendent.

Well, more like proved the possibility that the shawl was in fact from the victim, given the material, design, and the fact that the mtDNA matched a descendent. There are still many, many other peoples' blood from that time period that would yield the same match, but coupled with the story of the background of the shawl, they would like you to believe it a 100% match for their purposes. (A cynic would say... to sell the book.)