It was reported that Prince Phillip was furious with her and Fergie was ostracised from royal occasions for many years afterwards.
Levin added: “I think a lot of it is since Prince Philip passed away, who couldn’t bear her and didn’t allow her to come to Sandringham in 20-something years.
“So when he died, The Queen started getting much more friendly with her. She always liked her because she made her laugh and she’s so bubbly and alive. I think the big change is the cancer she had.”
The royal author added: “She has never said a bad word about the monarchy and she’s never said a bad word about Prince Andrew, she always said, ‘He’s a wonderful father’ and she’s stuck to being very moral.”
But she claimed that while Fergie might not necessarily be a “good friend” for the Royal Family, her charity work, especially around children is very “helpful”.
She explained: “I don’t think she necessarily is a good friend of the Royal Family but she does lots of charity work and most of her charity work is for children. A lot of that is for children with cancer.
“That’s very helpful because there’s very few people doing that.”