In the 2007–08 season, Williams-Stewart was assigned to another senior international competition, the Nebelhorn Trophy. There, she won the silver medal behind reigning European Champion Carolina Kostner and ahead of Finnish skater Laura Lepistö, who would go on to win the bronze medal at the 2008 European Championships. At the 2008 U.S. Championships, Williams-Stewart repeated her 13th-place finish of the previous year.