Despite her cool composure, Kate is "heavily" affected by Prince William and Prince Harry's ongoing issues.

Author Christopher Andersen claimed Princess Diana convinced the brothers to unite after Queen Elizabeth's death.

Harry referred to Kate as the "sister he'd never had and always wanted" in his memoir.

Kate, William, and Harry used to attend events together where they were very close.

Andersen suggests that Kate talked to William to make the appearance with Harry and Meghan.

William was not in the mood to make amends, and their smiles together are forced.

The rift between the brothers weighs heavily on Kate.

Kate's acting is the most convincing of all four.

Princess of wales played a significant role in bringing the brothers together.