The character was created by writer Nancy Sans, originally as a day player role. Her first episode, in season 18, involved her getting lost on the way to 123 Sesame Street, where Gordon and two directionally-abled science class students were watching the night sky.
When she was introduced as a regular, she worked at Hooper's Store, getting the job in a 1987 episode. She has developed relationships with Mike and Savion. She was also introduced as one of Gordon's students. During the 1990s, she ran a day care center. Currently, she maintains a veterinary practice in the building that used to serve as a garage in the courtyard between 123 Sesame Street and Hooper's Store. She started studying to be a vet in Season 30, and opened her practice in Season 32. 
She has appeared in the following specials:
- The Sesame Street Special
- Sesame Street: 20 and Still Counting
- Big Bird's Birthday or Let Me Eat Cake
- The Street We Live On
She has also appeared in the following videos:
- The Best of Ernie and Bert
- Big Bird's Favorite Party Games
- Rock & Roll!
- Dance Along!
- Sesame Street Visits the Hospital
- Telling the Truth
- Elmo Visits the Doctor
- What's the Name of That Song?
- Elmo's Potty Time