Over the years my quilt guild has been asked whether certain old quilts can be repaired. In most cases they can't. The old fabric is brittle and often just pulls apart or tears, and the remaining sections are only held together by very old and very brittle thread. I would think if you make a sweatshirt out of it, the sweatshirt would fall apart. The suggestion we have made is to find areas that still seem to be strong and cut out squares or rectangles to frame. Info about the quilt can be added to the back. These framed portions of the quilt can be given to other family members for a nice remembrance.