I think you can use pretty much any pattern you want. It would be the fabric choices and maybe the weight of the quilt that make it seasonal. You could do a nice log cabin or bear paw in Fall fabrics and colors (gold, rust, olive, browns, deep red etc.) with a medium weight batting for fall. Maybe a cute snowball quilt with winter themed fabrics (snowmen, snowflakes etc) with heavier batting for winter. Or even a flannel quilt for winter would be nice if she lives in a cold climate. For springtime another medium weight quilt in bright cherry pastels.. maybe an applique quilt of tulips or a pieced pattern using soft florals. And for summer a very light quilt (maybe even no batting if she lives in a hot climate) with summer time fabrics like bright colors or summer themes like the beach, picnics etc.
Barb C.