Rosanna is the only child born to the marriage of Alexander Cabot and Sheila Washburn. She arrived in Oakdale in 1992 shortly after her mother's death wanting to have a small-town experience like her mother. She lived at the Snyder farm and became very close to Emma Snyder. Though she tried to pass herself off as an average girl, Evan Walsh eventually discovered that she was an heiress and was worth millions. Rosanna dated farm boy Hutch Hutchison, but their relationship was ruined due to his fling with Debbie Simon. She then dated Evan Walsh briefly. Her father Alexander married Evan's snobbish mother Edwina, and no love was lost between the two ladies.