Some of the most personal correspondence Princess Diana ever wrote is headed to auction.

The dispatches consist of 32 cards and letters detailing her ugly and desperate divorce from now-King Charles III . Lays Auctioneers said they were originally sent to Dianas close friends Susie and Tarek Kassem, who have kept them safe for more than 25 years.

Its too difficult sometimes to keep ones head up and today I am on my knees and just longing for this divorce to go through as the possible cost is tremendous, Diana wrote in one of the letters, according to ABC News .

The late Princess of Wales reportedly met the Kassems during one of her visits to the Royal Brompton Hospital. She thanked them for their personal support in one of the letters, saying she was immensely touched by how protective you both are of me Im not used to that!

In one troubling note, she described the potential surveillance of her conversations . Diana wrote the couple claiming it is difficult to discuss personal issues as my lines here are constantly recorded and passed on and that she didnt have a cellphone.

If Id known a year ago what Id experience going through this divorce I never would have consented, Diana wrote in another letter, according to ABC News. Its desperate and ugly.