I would fix it and love it forever. It might be smaller than a king when the best parts are used. I might add a border to make it the size I wanted. I would make a label with a photo of my Mother at the age she was when she was sewing on it. Did the other siblings NOT get a quilt top? If yes, I would make a photo of the completed quilt top and frame it so it could be shared with each of them. If possible I would use some pieces to make each of them a pillow. I would make sure everyone knows which sibling inherits this quilt upon my death. Such a sentimental gift to have this quilt from your Mother.