If the squares seem too big, maybe you could chop them down to just the right size, wonky-style, and then fill them back out to full-size squares with scraps. Kind of a crazy-quilt version, so it doesn't matter that they came out different sizes and shapes.
I love crazy quilts and scrappy quilts so for ME that would be awesome; your GD's taste may be completely different. Definitely see if you can get some clues from her!