It's worth noting that the dynamics between family members can be complex and private, and it is not uncommon for there to be various accounts and speculations from different sources. Official information about the private relationships among the royal family members is generally limited.
Princess Diana was married to Prince Charles from 1981 to 1996, while Camilla Parker Bowles married Prince Charles in 2005. The Queen's mother, Queen Elizabeth The Queen Mother, was known for her warm and personable nature, and she was generally well-liked by the public. She was married to King George VI and was the mother of Queen Elizabeth II.
While there were reports of strained relationships between Princess Diana and certain members of the royal family, particularly after her separation from Prince Charles, it is challenging to provide concrete details about her specific relationship with the Queen's mother during those years.
Similarly, specific details about the Queen's mother's relationship with Camilla Parker Bowles, both before and after her marriage to Prince Charles, remain private. As with any family, the interactions and dynamics between individuals can vary, and it's often challenging to fully understand the complexities of personal relationships within the royal family.
For the most accurate and up-to-date information about the royal family's relationships, it's best to refer to reputable news sources and biographies written by trusted authors. Keep in mind that some aspects of their relationships may remain private and undisclosed to the public.