My condolences on the loss of your mother....regardless of how long she's been gone. Mine is 83 and a prolific quilter whose eyesight is beginning to wane also. I think you should take the seams apart that are troublesome....it will be like collaboration between you and your Mom....it's too beautiful a quilt to be anything less than a quilt....Unless you want to quarter it to make wallhangings for siblings. But mostly I'd say---do what you're comfortable with, whatever makes you feel good and don't feel guilty.