Author Sasha Anawalt describes D'Addario in the Joffrey Ballet: Robert Joffrey and the Making of an American Dance Company (University of Chicago Press; 1996). "As Joffrey's fierce but benevolent watchdog, she also sometimes made donations to rescue him and the school from financial trouble. Her generosity extended to Joffrey's students: She contributed toward the electricity bills of many teenage scholarship students and often steered them patiently through the terrors of living in New York," she writes.
The above passage is from an article written in July, 2004, about the Joffrey Ballet at 50:
Joffrey Ballet at 50
Anawalt gives the quintessential description of Mrs. D'Addario, the spirit of the Joffrey Ballet for nearly 44 years. She had an unmistakable persona -- you could immediately pick her out at any gathering -- as well as a distinctive look which, for me, includes picturing her with a cloud of cigarette smoke over her head!
What a loss to the ballet community. Another era has passed.
The news of her death is in today's links, which lead to her New York Times obituary.