As an accomplished beginner quilter, I would like to put my two cents in. I know from personal experience that if she doesn't sew- she really can't say. She saw something she liked and your fabric choice is stunning! Too many choices leads To indecision. She has seen your work and simply cannot tell you and it's not from disrespect it's with confidence in your work that she feels comfortable with your decision. I'm sure your nephew has bragged a lot about you! May the fabric speak to you and just enjoy making that quilt . You are sooooo over thinking this! Can't wait to see the finished product.