Prince William and Kate Middleton are mourning the loss of Dame Deborah James. The Duke and Duchess of Sussex shared a message on Twitter on Wednesday just hours after it was confirmed that James had died at age 40 following a lengthy battle with cancer. «We are so sad to hear the heartbreaking news about Dame Deborah,» the couple's tweet read. «Our thoughts are with her children, her family and her loved ones.»We are so sad to hear the heartbreaking news about Dame Deborah.