Schreier is a stage actress and veteran of German musical theater, having played Ariel in Footloose and Amber in Hairspray. In voice-over, she dubbed Kristen Schaal in A Walk in the Woods, Dena Kaplan on Dance Academy, Tina on Chuggington, and Holly on Lalaloppsy. She voiced characters in the video games Star Wars: The Old Republic, The Elder Scrolls V: Skyrim, and 1954 Alcatraz.