[5] During her first year, Rockwell was cast as Grandma Tzeitel in her high school's staging of Fiddler on the Roof, her first on-stage theatre experience.
[3] In 2002, during her time at Sycamore High School, she helped found the New Stage Collective, a local Cincinnati theater company (later closed in 2009 due to lack of funding).
[10] Rockwell made her Broadway debut as Margot in Legally Blonde on May 15, 2008, replacing Haven Burton.
[11] She later joined the U.S. national touring production of Legally Blonde for three months as a replacement for the role of Margot (after Rhiannon Hansen broke her leg during a performance).
[21] After completing her run in Rock of Ages, Rockwell "left the business" for about two years, stating in interviews, "I needed perspective.
[3] In the summer of 2014, Rockwell portrayed Jane opposite Nicholas Rodriguez in The Muny's production of Tarzan.
[24] In the fall of 2016, Rockwell appeared in the Arena Stage's regional production of Carousel as Carrie Pipperidge.
[26] After the closing of Carousel, Rockwell decided to pursue musical theatre as her sole career for one year, "to see if it [felt] right.
[27][28][29] The show had its world premiere as an out-of-town tryout at the National Theatre in Washington, D.C., from October 31, 2017, to December 3, 2017, in which Rockwell originated the role of Karen Smith.
[29][30] The musical, which is based on the film of the same name, began previews on March 12, 2018, and officially opened on Broadway on April 8, 2018, at the August Wilson Theatre in New York City.