[4] During her time at Northern Illinois University, Fox also attended summer workshops held at the Stella Adler Studio of Acting in New York City.

After that, she appeared in professional and regional theater productions, eventually obtaining her Equity membership while performing in the Actor's Theatre of Charlotte's Venus in Fur as Vanda.

[18] In February 2015, an announcement was made that Fox had been cast in the role of the lead character Roxie Hart in the Broadway musical production of Chicago, which has been continuously running at the Ambassador Theatre in New York since 1996.

[25] On September 5, 2015, TV Asahi of Japan aired a made-for-TV movie entitled 名探偵キャサリン (Detective Catherine), based on the detective novel series by Misa Yamamura (山村美紗), in which Fox performed in the lead role of Catherine Turner, a multilingual Columbia University graduate and the only daughter of a former vice president of the United States.

[citation needed] On April 29, 2015, Fox released a single music CD entitled Gondola no Uta in Japan.

[27] Fox performed on an eight-city live concert tour in Japan for the new album, starting on August 18, 2015, in Shibuya, Tokyo, and ending in the city of Natori in Miyagi Prefecture on September 8, 2015.