I think I have read every post on this topic because one never knows what's around the corner, and have made a couple of comments along the way. It is a beautiful quilt and there is a lot of advise to compute, but in the end it is you who made the quilt, your knowledge of your MIL and your capabilities and your gut feelings that will probably be the decision makers. Your decision is the right decision.
Please, it would be nice to know the outcome of this topic.