Meghan Markle's spokesman has responded to key charges against the duchess, calling them "a calculated smear campaign based on misleading and harmful misinformation".
According to royal historian Katie Nicholl's book The New Royals, Meghan was performing a "menu-tasting" at Windsor Castle before her and Prince Harry's 2018 wedding.
She "ended up having a tense exchange with a member of staff," the expert noted.
Late Queen Elizabeth II became aware of the matter and addressed it personally.
According to the royal expert, "Suddenly the Queen walked in and said: 'Meghan, in this family we don't speak to people like that.'"
Meghan was also accused of creating a toxic workplace and harassing two palace colleagues, who claimed to be "terrified" of the duchess and her actions.
In response to the charges, Meghan's spokeswoman refuted them, saying in a public statement, "Let's simply call this what it is – a deliberate smear campaign based on incorrect and damaging disinformation.
"It's no coincidence that distorted several-year-old accusations aimed at undermining The Duchess are being briefed to the British media shortly before she and The Duke are due to speak openly and honestly about their experience of recent years."
Furthermore, the palace conducted its own inquiry, but thereafter, officials refused to release their results, according to OK! Magazine.
The palace insider reportedly informed a media outlet at the time that Meghan and Harry were "disappointed" that the information were kept confidential, as they believed it would have exonerated Meghan.