The soprano’s successes include the title role/Lucia di Lammermoor at Utah Opera, where she has also sung Anna Sørensen/Silent Night, the First Lady/The Magic Flute, Adele/Die Fledermaus, Nella/Gianni Schicchi, and other roles in Carmen, The Long Walk, Man of La Mancha, and Messiah; Mabel/The Pirates of Penzance at Intermountain Opera Bozeman; and the Brahms Requiem and Saariaho’s Leino Songs with the Columbus Symphony. Rethwisch has participated in the prestigious young-artist programs of Santa Fe Opera, Chautauqua Opera, and Des Moines Metro Opera. During the 2015/16 season she was a Resident Artist with Tri-Cities Opera, where she appeared in Iolanta, The Telephone, and Sweeney Todd. She was a three-time regional finalist in the Metropolitan Opera National Council Auditions, most recently winning the Iowa district auditions in 2019. The soprano is an alumna of Simpson College and Florida State University.