Kate Middleton has stepped forward and gathered the courage to confess her biggest secret to Prince William. The Duchess of Cambridge doesn't have a good relationship with her brother-in-law, and she has let her husband know. In recent years, the relationship between Kate and Harry has experienced deep and obvious tensions that strongly draw attention.
In this regard, Prince William's wife has adopted a defensive position, prioritizing her immediate family, especially protecting her children. As a result, she completely leaves out the Duke and Duchess of Sussex, with whom she doesn't have any kind of contact.

Kate Middleton confesses everything to Prince William
For a vast majority, Kate Middleton represents the best future the British Crown could have. Her alliance with Prince William promises a modern and empathetic reign that seeks to unite tradition and modernity. However, not everything is harmonious and there is something that could cloud that promising future.
Kate Middleton has decided to confess to William that she doesn't have a good relationship with Prince Harry. The "betrayal" by him, after sharing family secrets in books and interviews, would have seriously affected the trust they both shared in the past. So much so that Middleton has included her nephews in that distancing, with whom she has no contact.
Although the Princess of Wales is saddened by this situation, she is unable to trust her brother-in-law. She thinks that any step she takes in private will be aired and this directly involves Prince William. When he becomes king, he will have to make certain decisions that will be marked by the distance with his younger brother.

If the family conflict is not solved before this happens, Kate's role will be crucial. Meanwhile, at this time, it is not beneficial for the future of the Duke of Sussex, since he doesn't have a good relationship with his sister-in-law. Middleton's mediation is complex, since her role as future queen requires extreme caution to avoid hindering the British institutional image.
The publication of Spare and the interview with Oprah caused wounds that apparently still have not healed in Kate's conscience. That book contained sensitive revelations about private discussions that worsened the royal discomfort and reduced the possibility of closing the differences.
Kate Middleton doesn't want to follow in Prince William's mother's footsteps
British royalty experts state that Kate doesn't want to repeat the same media pattern as Lady Di. Her wish is not to expose her children and to prevent family conflicts from going beyond the palace walls. For this reason, distancing Harry is part of that plan, since Meghan's husband represents the most conflictive part of the family.
Meanwhile, her decision is also affected by her refusal to fulfill Charles III's desire to take care of Highgrove House and Garden. A property that was Charles's refuge during his marriage to Diana. Kate's circle states that she doesn't want to be compared to her and this involves breaking certain ties with the past.

"It's as if she had to put herself in Diana's place, she was also Princess of Wales, but they're two completely different people," they point out. Prince William understands his wife's wishes and his intention is to avoid anything that could make her uncomfortable.
Among those things is not only this property, but also the relationship with Harry, with whom William doesn't get along either. There is a palpable tension between the brothers that has increased over time. This has made it easier for Kate to feel supported when she has confessed to her husband what she really feels about her brother-in-law.