ˈæftɚ ɹᵻspˈɑːndɪŋ tʊ ɐn ɪntˈɜːnəl dʒˈɑːb pˈoʊstɪŋ fɚɹə tʃˈɪldɹənz tˈɛlᵻvˌɪʒən hˈoʊst, sˈʌlɪvən bɪɡˈæn hɜː kɚɹˈɪɹ hˈoʊstɪŋ ðə tˌiːvˌiːˈoʊ kˈɪdz pɹˈoʊɡɹæmɪŋ blˈɑːk ˌɔn tˌiːvˌiːˈoʊ ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti fˈoːɹ.
After responding to an internal job posting for a children's television host, Sullivan began her career hosting the TVOKids programming block on TVO in 1994.