Mullen posted a 3-0 record at No. 3 to help William Smith take home the Epps Cup over the weekend. She defeated Ashley Stevens of Wellesley in straight sets, 9-5, 9-1, 9-2, before downing Katie O'Mealia 9-3, 10-8, 4-9, 9-3. Mullen went on to defeat Northeastern's Emily Raho in the Epps Cup final 9-2, 9-3, 9-6. She finished the season with a team-high 10 wins, notching a 10-9 individual mark.