I say go ahead!! Some of us (me included) get so hung up on perceived "perfection" that we drive ourselves over the edge trying to achieve it. IMPOSSIBLE!!! Lighten up!! This is a special project with the work of a lady who didn't complete it for some reason.
If I persisted with the Perfectionist label on myself, I wouldn't even think about working on my 1880's red/green quilt top that needs total rework because the lady was way off on her design. But it deserves to live....so, I am going to do the best I can to square up her very curvy blocks so that the quilt can be made.