Theatre and Toronto at the Royal Alexandra Theatre. She departed the company on August 27, 2017. Kassebaum then starred in the roles of Mother and Donna Sheridan in the 5th Avenue Theatre's productions of Ragtime and Mamma Mia!, respectively. References External links 1973 births People from St. Louis Missouri State University alumni American musical theatre actresses Living people Nannies American domestic workers 21st-century American women