Oh, yes, the stories are good! I do find that when I cross-reference historical incidents, Danilova's telling of them is always a little different than someone else's. She sometimes even contradicts herself!
Alas, the problem with oral history. There are so many stories, all of them good.
As for Night Shadow, Franklin recalls that Danilova was not given a choice. She heard the plot and that the two main female roles were the Sleepwalker and the Coquette. "Of course I am Coquette! I am coquette!" Danilova said, and was told by Balanchine that no, she was the Sleepwalker and was quite miffed until the first rehearsal when she realized that her part wasn't half bad!
I still value -- tremendously -- that these stories are told at all. If only I had as good a memory for details of the past as many of these dancers had. I marvel at how Tamara Geva, for one, seems to have remembered entire conversations word for word.