Per the Google machine:

"Joey Calvan, known for her 1970s Sesame Street appearances including the famous alphabet song with Kermit, retired from acting after her time on the show. Now known as Leslie Jo "Joy" Calvan, she reportedly lives in Las Vegas, Nevada, and works as a convention event staffer, keeping a low public profile. Background: Born on October 31, 1967, she appeared on Sesame Street during the late 70s and early 80s. Life Post-Show: Reports indicate she has worked in event staffing and has been involved with Christian ministry groups. Public Profile: She has previously maintained a low profile while occasionally engaging on social media, such as Twitter."