Originally Posted by virtualbernie
There are fabric glues that are supposed to stay soft but I would recommend slip stitching it by hand using small stitches making sure you don't pull it to tightly so as not to make it pucker. Beware of other glues because although it may be hard now, when you/or someone else washes the quilt, it may wash out... (I like the stitch witchery idea too)
I agree - I think I would (and have on clothes tears) slip in a small piece of stitch witchery and press for support and then with clear or matching thread stitch as finely as you can - assuming it is going to get loving abuse and washes.