Carr made guest appearances on Star Trek: Deep Space Nine, The Waltons, and The Paper Chase; played Henry Fonda's character's daughter for thirty-nine episodes of The Smith Family; and portrayed Kathleen "Kick" Kennedy, John F. Kennedy's favorite sister, in a television movie, Young Joe, the Forgotten Kennedy. She appeared in the miniseries Once an Eagle (1976) and had a recurring role as Margaret Devlin in the western series The Oregon Trail (1977). In the 1965-66 television season, Carr played Kathy, a student at a private girls' academy in California on The John Forsythe Show. She portrayed Karl Malden's character's daughter on The Streets of San Francisco (1972–77), as well as in the TV movie sequel, Back to the Streets of San Francisco (1992). Carr's only television series in which she had a lead billing was the short-lived CBS sitcom Miss Winslow & Son (1979), where she played Susan Winslow, the single mother and titular character.