we were late to the queen bed party, so when we finally got one, I had a dozen or more double quilts that just didn't cut it anymore. I took a flat sheet, ripped it into 5 sections and stitched it to the bottom for a new tuck area. Works great, although not what you'd want for a gift. But on the other hand if you did it cleverly like a pretty runner of some kind...and planned it so the long length of the quilt now goes side to side for a little more (Y) cover... I'll bet you have plenty of fabric left to do this. Do it before you gift it and she will think you are the most clever mom in the world.