<P> MacFarlane went to Boston Conservatory but did not graduate before moving to Los Angeles to begin a career in voice acting . </P> <P> MacFarlane first started voicing characters on Hanna - Barbera shows including Johnny Bravo and Dexter's Laboratory . Then after her work with Hanna - Barbera ended, MacFarlane began voicing many characters on Cartoon Network . </P> <P> In addition to voice acting, Rachael has also been involved in other aspects of animation, such as being a production manager for The Grim Adventures of Billy & Mandy and Welcome to Eltingville, and wrote an episode of The Grim Adventures of Billy & Mandy, titled "Educating Grim" - where she also met her husband . Seth MacFarlane asked her to help him with his new pilot for the Fox Broadcasting Company, which would become Family Guy . Rachael MacFarlane worked on the show providing incidental voices, and her brother told her she was good at it and asked her to stay, prompting her to move from New York City to Los Angeles . This launched her career as a voice actress; she remained an incidental cast member on Family Guy for several years and began getting other voice - over work on her own, working for both The Walt Disney Company and Cartoon Network . In 2005, her brother Seth cast her in his second major prime time animated show, American Dad! . </P> <P> MacFarlane also continues to contribute to Family Guy, on a regular basis . In September 2012, she released her first album Hayley Sings, which is a jazz vocal tribute to Hayley Smith, her character on American Dad! . </P>

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