Sarah Fergusonsays she has “no judgment” asPrince HarryandMeghan Marklemake their own way.Speaking exclusively with PEOPLE, Sarah, 63 — who is popularly known as Fergie — touched on how the Duke and Duchess of Sussex are creating their own path as they raise their two young children, 3-year-old sonArchie Harrisonand 1-year-old daughterLilibet Diana, in California.“I don’t believe that any single person has the right to judge another person. I’m not in a position myself to make any judgments,” says the Duchess of York, whose new novel,A Most Intriguing Lady,is out March 7. “I have been judged all my life, and I have no judgment on the Sussexes.““I think that[Princess] Dianawould be incredibly proud of her grandchildren. And not just the Sussex grandchildren, but Will’s children,” the Duchess adds, referring toPrince Williamand Kate Middleton’s three children:Prince George, 9,Princess Charlotte, 7, andPrince Louis, 4.Kevin Mazur/Getty; Chris J Ratcliffe/GettyThe Duchess previously told PEOPLE that she and Princess Diana, whom she affectionately called “Duch,” werebest friends from the time they were teenagers, long before Diana married the then-Prince Charlesand Sarah married his brother Prince Andrew.Sarah Ferguson.Zoe McConnellFerguson also spoke about being a grandmother herself toPrincess BeatriceandPrincess Eugenie’s children. Beatrice is a mother to 1-year-old daughterSienna Elizabethand a stepmother to husband Edoardo Mapelli Mozzi’s sonWolfiefrom a previous relationship, while Princess Eugenie welcomed sonAugustin Feb. 2021 and is currentlyexpecting her second childwith husband Jack Brooksbank.Her grandchildren “just follow me around like Peter Pan,” says the Duchess. “I’m ‘Super Gran Pan!'“Sarah Ferguson.Zoe McConnellShe adds, “Everyone says, ‘Oh, has it changed your life?’ And I go, ‘No, because I live [in the mindset of ] 3- to 6-year-olds.’ So I’ve now got another audience that likes me.“Can’t get enough ofPEOPLE’s Royals coverage?Sign up for our free Royals newsletterto get the latest updates on Kate Middleton, Meghan Markle and more!Yu TsaiIt’s no surprise that the Duchess is in tune with her young grandchildren — she’s a children’s book author, although with her newest book — which follows her 2021 bestsellerHer Heart for a Compass— she says, “I’m moving into female detectives.”

Sarah Fergusonsays she has “no judgment” asPrince HarryandMeghan Marklemake their own way.

Speaking exclusively with PEOPLE, Sarah, 63 — who is popularly known as Fergie — touched on how the Duke and Duchess of Sussex are creating their own path as they raise their two young children, 3-year-old sonArchie Harrisonand 1-year-old daughterLilibet Diana, in California.

“I don’t believe that any single person has the right to judge another person. I’m not in a position myself to make any judgments,” says the Duchess of York, whose new novel,A Most Intriguing Lady,is out March 7. “I have been judged all my life, and I have no judgment on the Sussexes.”

“I think that[Princess] Dianawould be incredibly proud of her grandchildren. And not just the Sussex grandchildren, but Will’s children,” the Duchess adds, referring toPrince Williamand Kate Middleton’s three children:Prince George, 9,Princess Charlotte, 7, andPrince Louis, 4.

Kevin Mazur/Getty; Chris J Ratcliffe/Getty

Sarah Ferguson, Meghan Markle, Prince Harry

The Duchess previously told PEOPLE that she and Princess Diana, whom she affectionately called “Duch,” werebest friends from the time they were teenagers, long before Diana married the then-Prince Charlesand Sarah married his brother Prince Andrew.

Sarah Ferguson.Zoe McConnell

Sarah Ferguson Rollout

Ferguson also spoke about being a grandmother herself toPrincess BeatriceandPrincess Eugenie’s children. Beatrice is a mother to 1-year-old daughterSienna Elizabethand a stepmother to husband Edoardo Mapelli Mozzi’s sonWolfiefrom a previous relationship, while Princess Eugenie welcomed sonAugustin Feb. 2021 and is currentlyexpecting her second childwith husband Jack Brooksbank.

Her grandchildren “just follow me around like Peter Pan,” says the Duchess. “I’m ‘Super Gran Pan!'”

Sarah Ferguson Rollout

She adds, “Everyone says, ‘Oh, has it changed your life?’ And I go, ‘No, because I live [in the mindset of ] 3- to 6-year-olds.’ So I’ve now got another audience that likes me.”

Can’t get enough ofPEOPLE’s Royals coverage?Sign up for our free Royals newsletterto get the latest updates on Kate Middleton, Meghan Markle and more!

Yu Tsai

Michelle Yeoh Rollout

It’s no surprise that the Duchess is in tune with her young grandchildren — she’s a children’s book author, although with her newest book — which follows her 2021 bestsellerHer Heart for a Compass— she says, “I’m moving into female detectives.”

source: people.com