According to royal sources the Palace press office is said to be in chaos over the now-public personal correspondence, with senior officials considering whether or not to release a statement.
The letters sent by the 37-year-old to her troubled father read: 'Dad, I'm so heartbroken. I love you. I have one father. Please stop victimising me through the media so we can repair our relationship.'
She explained how he had broken her heart 'into a million pieces' by giving interviews to the press, attacking Prince Harry and fabricating stories.
Thomas Markle Sr, 74, published the five-page message on Sunday after five of Meghan's closest friends opened up anonymously to People Magazine about the 'heartbreak' the very public feud with her father has caused.
The unnamed confidantes told People Mr Markle responded with a request for a 'father-daughter photo shoot'.
According to The Daily Telegraph UK, the pregnant Duchess has yet to decide if she will take formal legal action over the leak.
In recent weeks loyal fans of the newly minted Duchess have criticised Kensington palace for 'failing to protect' her from racist comments and negative coverage.