Despite suffering from mobility issues, Queen Elizabeth carried out her duties to the very end, meeting with the incoming Prime Minister, Liz Truss, just two days before her 2022 death at the age of 96. The late Queen turned to members of her family for support at times, but as Queen Camilla told author Gyles Brandreth, it wasn’t always “necessary.”
In the months following Prince Philip’s 2021 death, those around the late Queen worried about her mental state. Brandreth, a longtime friend of the Royal Family, noted in his book Elizabeth: An Intimate Portrait that Queen Elizabeth had a “different” approach to mourning than her great-great-grandmother, Queen Victoria.
“There is no magic formula that will transform sorrow into happiness,” she said, “but being busy helps.” Part of keeping busy meant attending to royal duties, when possible, since Philip's death happened during the COVID-19 pandemic. This meant attending the October 2021 openings of Scottish Parliament and the Welsh Senedd, and King Charles and Queen Camilla came along for both trips.

But Camilla, then known as the Duchess of Cornwall, told Brandreth that their presence really wasn’t “required” due to the formidable Queen.
“‘We weren’t required,’” the Duchess said to me soon afterwards, laughing,” Brandreth wrote. “‘We were there to help out if necessary. It wasn’t necessary. The Queen did it all. She wanted to.” Camilla added, “She’s unstoppable.”
Queen Elizabeth put so much energy into staying busy after her husband's death that Brandreth said she pushed it a bit too far. “In that period of six months, the late Queen “did so much, so purposefully and with such a determination to not give way to any form of self-pity (which, she said, ‘My husband would certainly have not approved of’), that she probably did too much.”
However, no could have accused of her of wallowing. “Life goes on,” she said. “It has to.”