Prince Harry and Meghan Markle's royal departure (opens in new tab) was a major blow to the royal family, but the Queen refused to let it affect her monarchy.

In his forthcoming book, "The Queen" (opens in new tab), royal author Matthew Dennison provides some insight into how the news of the royal departure affected the queen (opens in new tab) and how her long-held philosophy about the job of monarch ultimately determined her reaction. Some insight into how the Queen's long-held philosophy of her job as monarch ultimately determined her reaction.

"Elizabeth was hurt and disappointed," Denison writes in the book, according to an excerpt published by Us Weekly (opens in new tab). Even though she had strong feelings about the abdication on a personal level, the queen quickly put the monarchy first and made it clear that Harry and Meghan could not use the title "Her Royal Highness" if they were not active members of the royal family.

In an excerpt, Denison explains why this decision was very much in line with the Queen's philosophy on the role of the monarch: ["The Queen" will be released on September 1. To read more of Denison's insights on Elizabeth and the inner workings of the royal family, click here.