She is the daughter of Louise (née Higginbotham) and Dan Sullivan Smith, and granddaughter of silent film actress Toy Gallagher.

She has often claimed to be a distant relative of American film producer and businessman Walt Disney.

[1][2] Disney is one of a small number of women who do voice-over work for film trailers.

She appeared as the character Melinda Chisney in Lake Bell's directorial debut In a World..., a film about voice artists.

[6][7] Disney won a Key Art Award for voicing the Gone in 60 Seconds trailer.