“So I rushed down there, wondering how I could commute from New York to Dallas, which I did do” she told the website www.ultimatedallas.com in a 2006 interview. “And the two part guest shot turned in a fifteen year commitment as the character of Valene Ewing.”
From the book “Dallas: The Complete Story of the World's Favorite Prime Time Soap,” Joan recalled the early origins of developing her character.
“I thought the script was wonderful and Valene was a great character. But we created her within those two episodes,” she said. “I remember going to wardrobe and getting a peachy pink waitress uniform, and the shoes. And I was trying to get that Texas sound, her all important accent. And so we created her layer by layer.”
Born in New York City, Joan was named after the saint Joan of Arc because her father knew that she would become famous.
At age 15 Joan interviewed Julie Harris for a school newspaper and the actress later recommended that Joan apply at the Yale School of Drama. Joan become the second youngest student in the school's history, second to Harris, who ironically, played Joan's mother (Lilamae Clements) in “Knots Landing.”