Royal CHAOS: Meghan Markle's 'pivotal' assistant QUITS sending Royal Family

The Duchess of Sussex’s PA “played a pivotal role” in handling the so-called ‘Markle debacle’ in the build-up to the Royal Wedding, where Thomas Markle – the bride’s father – caused countless problems for the Royals. But the PA, named only as Melissa, has resigned just six months after the marriage.

A source said: “It’s a real shock.

“Why would she want to leave such a prestigious job so soon?”

A Kensington Palace source told the Mail: “Melissa is a hugely talented person.

“She played a pivotal role in the success of the Royal Wedding.

“She will be missed by everyone in the Royal Household.”

Kensington Palace declined to comment on the PA’s departure.

Royal biographer Robert Jobson claims in his new book, Charles At Seventy, that the Royal Wedding preparations were so stressful, Prince Harry became “petulant and short-tempered” with members of staff.

Mr Jobson writes: “Raising his voice on occasion, Harry would insist: ‘What Meghan wants, she gets’.”

Meghan’s former agent, Gina Nelthorpe-Cowne, said Meghan was ruthless with her attention and her priorities in the weeks and months before the Royal Wedding.

She was “picky”, with both her clothes and her colleagues, and instantly dismissed those who did not share her “vision”.

The PA’s resignation comes amid claims the Queen warned Prince Harry about Meghan’s “difficult” attitude after a row over what tiara she could wear on her big day.

A well connected Royal source said: “Meghan had her heart set on this tiara with emeralds and Prince Harry hit the roof when they were told it was impossible for her to wear it.

“There was a very heated exchange that prompted the Queen to speak to Harry.”

The source claimed: “The message from the Queen was very much Meghan needed to think about how she speaks to staff members and be careful to follow family protocol.”