1) The quilt IS lovely as is and the stitches ARE nice and even
Questions/Concerns?
How well would this hold up to even gentle washing the way it is?
How much seam allowance is there?
Sometimes fraying is an issue when the stitches are so far apart.
Can you (or even want to) resew the pieces and still let the original stitching show? so your MIL stitches end up being the "decorative" part and your sewing is the "hold it together" part?
It looks like it has been nicely pressed and the designs are delightful.