In his book 'Catherine, the Princess of Wales,' royal author Robert Jobson reveals that Kate Middleton established clear 'life rules' regarding her royal duties and family priorities while pregnant with her second child, Princess Charlotte, in 2015. She communicated these guidelines to Queen Elizabeth II and then-Prince Charles, emphasizing her need for space to grow into her role and her insistence on taking her full maternity leave. Jobson notes that Kate's priority has always been her family, which has become especially poignant as she battles cancer while still managing her royal duties. Despite her health challenges, she has made public appearances, including Trooping the Colour and Wimbledon, demonstrating her commitment to both her family and royal responsibilities. Sources close to the royals highlight Kate's desire for her children to maintain close family ties, reflecting her upbringing in a tight-knit family. Kate's assertiveness in defining her role has garnered respect within the royal family.