I like NativeTexan's idea. Whenever I do a very linear quilt, I like to use a curvy quilting line. Doing a bit of a 'circle' allows you to gently go from corner point to next corner point and not worry if they aren't exact. It also allows you to go the length of the top before turning around. Great quilting design for a beginner. For the borders, you could do a bit of something in each strip or just go the length of each border with a couple wavy lines (parallel to the binding). Then, when you feel more confident, add a little something in the center of the larger plain squares. It could be something as simple as a diamond or as fancy as you feel comfortable trying. BTW - It is a wonderful top, I'm sure she will be very happy with it for a very long time!