The pair have always remained tight-lipped about their relationship, but there have long been reports of tension between them amid their husbands’ feud.
Royals are said to believe this could be Meghan’s opportunity to ‘go nuclear’ and finally expose the root of the tension between the in-laws in the CBS interview with Oprah Winfrey airing tonight in the US.
It comes as further reports in The Mirror last night suggested the Duchess of Cambridge could assist Buckingham Palace with its investigation into bullying claims during Meghan’s time as a working royal.
Past and present palace employees are set to be invited to speak in confidence about their experience working for the Duchess of Sussex, following complaints made by a former communications secretary.
A source told The Sun: ‘If she has chosen to speak candidly about her time with Kate then the damage that could be done to the monarchy is vast.
‘She has the power to lay bare just how bad things really were between her, Harry, William and Kate.’
However, the Duke and Duchess of Cambridge are said to be ‘hopeful of a reconciliation’ with the couple because ‘they’re a family and families come through these things’.
A friend of the Kate and William told The Telegraph: ‘They both remain hopeful of a reconciliation with Harry and Meghan. It has been very difficult for both sides and there has been a lot of sadness over what has happened, but ultimately they want things to improve between them in the fullness of time.’
The Queen will apparently not be tuning into the interview as she is focused on ‘Philip duty’.