Princess Kate Middleton’s long effort to keep peace within the royal family appears to have hit a wall. A new book by royal expert Christopher Andersen says the Princess of Wales finally stepped back from Prince Harry after years of trying to ease tensions between him and Prince William. According to Us Weekly, the breaking point came after Harry’s May 2025 interview, when he spoke publicly about King Charles III’s health. The account presents Kate as deeply affected, especially given her own recent cancer battle and recovery.
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Prince Harry Commented on King Charles’ Health
In the excerpt, Andersen points to Harry’s remark, "I don’t know how much longer my father has," Prince Harry said according to Us Weekly. That line, the book argues, landed badly inside palace walls. Andersen writes that Kate was “more disappointed than angry,” while William reacted with fury. The author says William had already cut ties after Harry’s memoir Spare, but this moment hardened his position further. Kate, who had tried to repair the brothers’ bond, is described as no longer willing to stand in the middle.
Christopher Andersen Says Kate Was Done
The book goes further, saying Kate made a clear decision after the BBC interview. Andersen writes that she promised William she “was done” with Harry. He also includes a stark assessment from a palace insider: "Princess Catherine is ‘the sweetest, most loving person you could ever know,’" a Sandringham staffer said according to Us Weekly. The same source added that she has her limits. That portrait fits a royal figure who spent years choosing restraint, but who now appears to see no path forward after the latest public rupture.
Shared Cancer Battles Changed Kate’s View
Andersen believes Kate’s bond with King Charles grew stronger through their parallel health struggles. Charles announced his cancer diagnosis in February 2024, and Kate shared her own diagnosis one month later. She has since said she is in remission. In Andersen’s view, that shared experience made Harry’s public remark feel especially painful. He said Kate understood how damaging such speculation could be for someone facing treatment. It also placed her in a similar emotional position, making the comment feel personal as well as deeply disrespectful to the King.
Prince William and Kate Present a United Front
The latest account suggests William and Kate are now aligned on Harry in a way they were not before. For years, Kate was often seen as the calm link between the brothers, the one most likely to encourage some form of reconciliation. Andersen now believes that chapter is over, at least for now. With his new book arriving on May 5, the author argues that the family divide has entered a harder phase. For the Princess of Wales, patience may have run out after one interview too many.
