Queen Elizabeth wasn’t very sympathetic towards Princess Diana while the latter was dealing with Prince Charles’ infidelity.

In the documentary Fergie vs Diana: Royal Wives at Windsor, royal expert Ingrid Seward talked about the two female royals’ relationships with each other.

According to Seward, the Princess of Wales was gravely misunderstood in the royal household. But it seemed as though the queen didn’t also exert much effort in trying to get to know her daughter-in-law.

“She was also unhappy in her marriage because she was convinced that Charles was seeing Camilla. She became obsessed with Camilla. She was bulimic. The Queen always said she's like a nervy racehorse and said treat her with kid gloves,” Seward said.

The royal expert also said that the royal family blamed the fall out of Prince Charles and Princess Diana’s marriage on the latter’s eating disorder. However, one of the main reasons for the Prince and Princess of Wales’ split was the former’s affair with Camilla Parker Bowles.

Royal expert Jenny Bond echoed Seward’s statements by saying that Princess Diana was unsure of herself. And she also quite emotional but the royal family is not used to dealing with people who tend to emote.

“You don't do that; you have a stiff upper lip. If you wish to cry you go to your room and do it there but Diana wasn't that sort of person. She showed her emotions, she couldn't help it,” Bond said.

Princess Diana was very vocal about the struggles she faced within the royal family. During her interview with Martin Bashir for Panorama, the late royal admitted that she knew that Prince Charles was having an affair with Camilla early on.

Prince William and Prince Harry’s mom told Bashir that she was aware of the relationship but she wasn’t in any position to speak up about it. And when Bashir asked what proof did the late royal have that her husband was having an affair, Princess Diana said that a woman’s instinct is very good.

The late royal also revealed what effect Prince Charles’ affair had on her.

“Pretty devastating. Rampant bulimia, if you can have rampant bulimia, and just a feeling of being no good at anything and being useless and hopeless and failed in every direction. Well, people were - when I say people, I mean friends, on my husband's side - were indicating that I was again unstable, sick, and should be put in a home of some sort in order to get better. I was almost an embarrassment,” she said.