The princess has been recuperating in South Africa from an ENT infection.
The hospital stay -- her first since 2013 -- and the palace's delay in revealing it have raised fears over her health, given her age.
The Italian aristocrat is also a father to daughter Sienna with his wife Princess Beatrice.
The late Princess of Wales would have been happy seeing the Duke and Duchess of Sussex becoming "independent humanitarians."
"All I'd say is that the portrayals you see now are not the best way to understand her."
The couple is said to be planning a move to the United States after the marriage
The 95-year-old will resume her work this weekend with "light duties."
"Courtiers also discreetly keep an eye on the remote control as the Queen rests."
The British monarch is now "in good spirits" and back at her desk after an overnight stay at the hospital.
The palace apparently went to all lengths to ensure that the public wouldn't get a whiff about the Queen's recent hospitalisation.
The Duke of Cambridge announced America will host the next Earthshot Prize Awards in 2022.
Republican Jason Smith asked "why the royal family does not simply strip Meghan and Harry officially of their titles."
As per a 2016 book, the Spanish monarch had 62 lovers in one six-month period alone.
The Duke and Duchess of Sussex looked like "a couple of kids in love" backstage at the event.
The British monarch is expected to recuperate for the rest of the week at home.
The Duke and Duchess of Sussex have so far only announced two projects for their multi-million dollar deal with Netflix.
"She is a bit wobbly on her legs and we know it's not drink because she's given up alcohol."
Kate had enrolled the same year as Prince William after deferring her university place to take a gap year.
Royal photographer Arthur Edwards suggested that the pictures show that William and Kate are "genuinely in love" and the Crown's future is safe in their hands.
The Duke and Duchess of Sussex welcomed their daughter Lilibet Diana on June 4.