Opel portrayed Kafka in the Off-Broadway debut of David Ives' one-acter, Words, Words, Words, which ran at Primary Stages in November 1993 to February 1994[10][11] She appeared in another Ives play, Polish Joke, which ran Off-Broadway in a Manhattan Theatre Club production in February to April 2003. Opel played several characters, and was nominated for the 2003 Drama Desk Award, Outstanding Featured Actress in a Play.[12]
Opel played the title character in the first national tour of The Drowsy Chaperone, which started in September 2007.[9]
From November 2014 to April 2015 she appeared on Broadway in the musical Honeymoon in Vegas, and was nominated for the 2015 Drama Desk Award for Outstanding Featured Actress in a Musical.[15][16]
She played the title role in Hello, Dolly! at Ford's Theatre in 2013.[17] She appeared in Follies at the Repertory Theatre of St. Louis in September to October 2016, as Carlotta.[18] She appeared in the new musical Curvy Widow: The Musical at the North Carolina Stage Company in October 2016.[19]
It was announced on November 13, 2018, that Opel would be taking over the role of Madame Morrible in the Broadway production of Wicked, which she did from November 20, 2018 to January 20, 2020.[20]
In 2021 Opel portrayed Carrie Chapman Catt in the historical musical The Suffragist, about the lives of Chapman Catt, Alice Paul, Ida B. Wells, Lucy Burns, and Anna Howard Shaw. The production was written by Cavan Hallman, with music by Nancy Hill Cobb, directed by Rachel Klein, and performed at the Gallagher Bluedorn Performing Arts Center.
[21][22][23]
In 2022, Opel started portraying Cinderella's Stepmother in the Broadway revival of Into the Woods.[24] She reprised this role in the subsequent 2023 national tour.[25]