As Prince William and Kate Middleton continue to deal with the Duchess of Wales' cancer diagnosis and ongoing treatment, a close designer friend of the royal family is sharing what the couple is reportedly going through in private right now. [Amaia Arrieta, the designer responsible for some of Prince George, Princess Charlotte, and Prince Louis' most striking looks over the years, recently told The Telegraph." I think they are having a hell of a time."

"I hope they come back," Arrieta continued.

"It's really a personal thing."

Prince George, Prince Charlotte, and Prince Louis are all in the midst of the 2018 wedding of Princess Eugenie, the annual family church visit on Christmas Day, and the now-famous British Mother's Day photos released by Kensington Palace after Middleton was briefly hospitalized for a scheduled abdominal surgery, She has worn many of Arrieta's pieces to high-profile events.

"I first noticed Prince George wearing my designs when I saw him in a photo on the cover of Hello! magazine's cover photo at Waitrose," Arietta told the magazine. But you never know if she'll actually wear it," she said.

"We often have tight deadlines. We'll do anything for them. ...... The children always end up looking amazing in the end."

After intense scrutiny and online conspiracy theories following the release of what later turned out to be doctored images of Middleton and her children, the Princess of Wales announced that she had been diagnosed with cancer and was seeking preventive chemotherapy.

Prince William was reportedly "furious" over the online attacks, with the Daily Mail's Rebecca English adding at the time that she felt the Prince of Wales was "carrying the weight of the world on his shoulders."

"I know he is angry, frustrated, and yes, deeply disappointed by the events of the past few weeks," she wrote at the time." When will it all stop?" he is said to have asked."

Prince William reportedly feels "guilty" for "failing to protect" the princess before and after her diagnosis, which may have added to the stress of the whole situation.

"William is definitely frustrated about what has happened. He is not frustrated with Kate, he is frustrated that such a ridiculous fuss has been made over nothing and that everything has been pushed through," said one royal expert OK!

"He also promised Kate's parents that he would protect her and look after her, so any hardship, they will feel guilty.