I am really afraid it would look funny to just add more quilting to it. I would also contact the quilter, depending on what the agreement was that you made. If you left it up to her you may be stuck, but she should know that you are disatisfied. That is only fair for both of you. I longarm my quilts and I think I would put a motif in the middle of each block and some type of freemotion meander in the background and sashing. The problem is that it would require taking out the thread that she put in. Many people would not be willing to do this, but if it were my quilt I would. It is just such a beautiful quilt I think it would be worth the work. Just my opinion and I know some others will disagree.