I'm no professional quilt restorationer person.
here were other squares that while not completely frayed through, needed help. I resisted replacing them because, quite frankly none of the fabrics were in any shape to endure even the gentlest taking out of seams and resewing. So I geniused it up and added a little light light fused interfacing to those squares. Boom. Like a little fabric support bra.
So it's almost done.