I think that she'll love any quilt you make. Although the Underground Railroad/quilt connection is purely speculation and quite a bit of romanticized fiction, the quilt itself can be used in teaching the value of hand made creations and the stories can still be told. If you are wanting a to make a quilt that would have some true history to it, check out the Hobo Quilt. It's made using fabric interpretations of actual hobo markings. Or, come up with your own design. I'm currently working on designing a quilt depicting either the miracles or parables of Christ.