After moving to Los Angeles, she worked with some Directors on looping and voice work for films and TV shows. In an Anime Dream interview, Ruff credits Richard Epcar, Steve Kramer and Michael Sorich for training her to dub anime. In the Digimon series, she was referred by Director Mary Elizabeth McGlynn to audition for Lopmon and Antylamon in the third season, and in the fourth season she landed the lead part of Zoe. Ruff said that it was her first show that made it to TV, and a show that let her "work my acting muscle". She played tomboy-ish characters Miyao in Carried by the Wind: Tsukikage Ran and Kiki Rosita in Mobile Suit Gundam: The 08th MS Team.