Despite her initial hesitation, Catherine eventually accepted the title with the support of her husband and King Charles. She acknowledged that enough time had passed, making the burden of the title less burdensome. The decision to decline the title of Princess Catherine is discussed in a new book by Robert Jabson about the Duke of Cambridge.

According to an excerpt from Jabson's work, Middleton was hesitant to accept the title due to the considerable legacy left by her mother-in-law, Princess Diana. Jabson further explains that Princess Catherine was wary of being compared to Diana, who was affectionately known as the "People's Princess" and remained popular.

The book suggests that public expectations of maintaining Diana's legacy contributed to Catherine's reluctance to accept the title. After Queen Elizabeth ascended the throne, King Charles ascended the throne and Prince William was made Prince of Wales.

Based on these developments, Jabson’s book suggests that Catherine initially had reservations about accepting the title of Princess of Wales but eventually accepted the title with the support of her husband and the King. The text notes that Catherine put aside her initial uncertainties and accepted the title with pleasure.

Acknowledging that enough time had passed to lessen the burden associated with the title. By that time, she had established herself internationally and was recognized for her own achievements, which made the title more meaningful to Catherine.