Kate Middleton allegedly said her walkabout with Prince Harry and Meghan Markle after Queen Elizabeth II’s death was the “hardest” thing she’s had to do.

Veteran royal correspondent Robert Jobson claims in his upcoming new book, “Our King,” that the Princess of Wales felt uncomfortable because of the “ill feeling” between the couples.

“Catherine later admitted to a senior royal that, such was the ill feeling between the two couples, the joint walkabout was one of the hardest things she’d ever had to do,” Jobson writes, per the Daily Mail.