She has acted in musicals (such as Guys and Dolls) and appeared on the Flip Wilson Show with other Sesame Street cast members during its first season.
[citation needed] Long's main role on Sesame Street, until the character was phased out in 2016, was Susan, wife of Gordon Robinson.
At the beginning of the first season, her character was a housewife; afterwards, her role expanded to that of being a nurse as well as the mother of adopted son Miles.
[citation needed] In 1975, Long released a single under her own name on RCA Records called "Rainy Day Friend" with a B-side titled "July the 12th, 1939".
On February 10, 2010, Long was struck by a car as she crossed Route 130 near her home in East Windsor, New Jersey, suffering head injuries as a result.