Kate Middleton didn't like Prince Harry publicly speaking about King Charles III's health. According to royal author Christopher Andersen's new book, Kate! The Courage, Grace and Power of the Woman Who Will Be Queen, the Princess of Wales was "done" with the Duke of Sussex after he spoke with the BBC about his father's cancer battle. "Now it was time to nail the door shut once and for all, and for the first time Kate, who had worked harder than anyone to mend the rift between the brothers, willingly handed her husband a hammer," the journalist wrote in a passage obtained by Us Weekly.