In "The Way We Were," Burrell wrote about helping Diana bury Monckton's child.

Rosa Monckton told ABC News she had not known that Paul Burrell wrote about the incident until ABC's London bureau told her about it.

"I'm utterly appalled," she said. "I'm so angry."

Monckton refused to answer any more questions, saying if she did, she would "burst into tears."

"I do not want to speak about this further," she said.