of absence to complete a workshop in New York City. Fahy joined the rest of the principal tour cast for her stint: Alice Ripley as Diana, Asa Somers as Dan, Jeremy Kushnier as Dr. Madden, and Preston Sadleir as Henry. In July 2011, it was announced that Fahy had been cast in The Unauthorized Autobiography of Samantha Brown at Goodspeed Opera House. She reprised her role as the title character when performances began August 4, 2011, and continued through August 28, 2011. In January 2012, Fahy appeared in a one-night concert reading of Twilight: The Musical at New World Stages as Bella. In January 2015, Fahy participated in a production of We Are The Tigers at Feinstein's/54 Below, singing as Riley Williams. Television and film Fahy first appeared on ABC's One Life to Live in February 2010 as college student Hannah O'Connor. She has described her character in these terms: "stalked an ex-boyfriend; overdosed on painkillers; has a fixation on a coed; witnessed a crime." The role ended in November 2010, with Fahy appearing as Hannah in two subsequent episodes in January 2012. Other television credits include a guest appearance on the series Gossip Girl as Devyn. In 2011, Fahy appeared in the Hallmark Hall of Fame film The Lost Valentine as a young 1940s-era mother, Caroline Thomas, with Betty White as Caroline in present-day and Jennifer Love Hewitt as a reporter learning of Caroline's story. The following year, Fahy appeared in the miniseries Political Animals as ambitious blogger Georgia, and guest starred on Necessary Roughness as Olivia DiFlorio, tutor-turned-girlfriend of the main character's son. In 2016, Fahy was cast as Sutton Brady in the Freeform drama series The Bold Type, which premiered on June 20, 2017. She has won praise for her performance in this role, with one reviewer noting that "Fahy, giving one of TV's most charming and underrated performances, continues to define the show's fizzy, occasionally bawdy comic streak with exquisite timing and a particular aptitude for punchlines that hurt just a little bit". In November 2020, she was cast in a co-starring role in the drama film The Unbreakable Boy. In February 2022, Fahy was cast in a starring role playing Daphne Sullivan, a woman vacationing with her husband, in the second season of the HBO drama series The White Lotus. She had auditioned for Alexandra Daddario's role in the first season of The White Lotus.