Emmy was a part of the original Broadway cast of Hamilton in 2015, serving as both part of the ensemble and as an understudy for Angelica Schuyler, Eliza Hamilton, and Peggy Schuyler/Maria Reynolds. She left the Broadway production in 2016 to originate the role of Pearl Krabs in the Chicago tryout version of The SpongeBob Musical. She then returned to Hamilton as part of the original Chicago cast in 2016 before being cast as Angelica Schuyler in the first national tour of Hamilton in 2017.