According to the Daily Mail, the Princess of Wales chose to remain at Adelaide Cottage with her three children, Prince George, Princess Charlotte and, Prince Louis as they were due to start school at their new school, Lambrook, the following day.
The Mail's royal expert, Robert Hardman elaborated in his new biography Charles III: New King, New Court. The Inside Story, that the Princess felt they needed a parent with them and wasn't prevented from going to Scotland by the King.
He penned: "He said I was welcome at Balmoral, but he didn’t want…her [Meghan]. He started to lay out his reason, which was nonsensical, and disrespectful, and I wasn’t having it. Don’t ever speak about my wife that way.
"He stammered, apologetic, saying he simply didn’t want a lot of people around. No other wives were coming, Kate wasn’t coming, he said, therefore Meg shouldn’t. Then that’s all you needed to say."
But according to Richard, Kate had not been asked to stay at home: "She had certainly not been asked to stay away," he explained.
"Rather, it was the start of a new term at a new school for George, Charlotte, and Louis, and she had decided that one parent should be with them on such an important day."
Prince William and Princess Kate tried to keep a sense of normality for their children at the time which is why they still insisted they go to school on 8 September 2022.
During their walkabout in Windsor, the Prince of Wales talked to school teacher, Elaine Gee, from Woking: "Prince William spoke about George, Charlotte, and Louis, saying that they were trying to keep some sense of continuity for them at school and keep things as normal as possible," according to PEOPLE Magazine.