Earlier this year sources told US publication The Daily Beast that her husband, the Prince of Wales, is nowhere near ready to forgive his younger brother for several years’ worth of slights, but in the past Kate urged him to look to the future.
Kate took centre stage a Balmoral Castle summer summit, where King Charles tried to put a long list of Mountbatten-Windsor issues to rest – including what to do about their ongoing faction with Harry, and his wife Meghan Markle, Duchess of Sussex.
“It’s been a year since the Queen passed, and it’s more than overdue that they work on healing this terrible rift,” says our insider.
“It’s what she would have wanted and Charles is reminding people of that. William is still angry though, and struggles with the idea of making any concessions towards Harry.
“Kate believes there’s no way they can fix things until the two brothers get in the same room and air out their grievances to each other. It’s the only way,” says the source. “There can be no healing without Harry’s presence.”
Earlier this month, New Idea was told that Kate has been “urging” Charles to extend Harry an invite to his Scottish Highlands estate as the family gathered to mark one year since the Queen’s passing, before he was due to depart the UK and head to Dusseldorf to launch the latest Invictus Games on September 9.
“There’s something poignant about Kate pushing for a reunion between the boys on the anniversary of Her Majesty’s death, in the same place in which they all said goodbye to her,” a separate source revealed.
The first insider added: “Kate’s having to walk a fine line between loyalty to the Crown and her husband, but she’s getting William used to the inevitable – he needs a face-to-face with Harry.
"She’s very canny, suggesting Balmoral as the place to go for peace talks. The brothers are more likely to be calm and rational surrounded by memories of their grandmother.”
However, from the latest updates, it appears Kate is moving on from trying to heal the rift between the Royal brothers.