Thank you, everyone, for your kind and helpful comments. I ordered Minky for the back and I will just put it over the existing fleece. I will zig zag over the seams and this will hold the backing. Also, some heart appliques, one over the hole and others to match.
I really appreciate your comments, jokir44. I have been chastising myself over poor workmanship but your post made me feel better about this. When I think of all of the quilts that I have gifted, I would hate to think that they are all falling apart. Thanks again. I so appreciate everyone's help with this project.