Prince William and Kate Middleton 'going through hell' amid her ...

A friend of Prince William and Kate Middleton has revealed they are "going through hell" as the Princess of Wales battles cancer.

Amaia Arrieta, a designer and friend of the couple, has revealed that it's been difficult for the pair following Kate's diagnosis.

"I’m heartbroken at the moment," she told The Telegraph. "I think they are going through hell."

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"I hope they will be back. It’s really personal," she added.

It comes after Prince William offered an update on his family's wellbeing during a recent engagement.

"Do you mind if I ask how your wife and children are?" one woman asked William outside the James’s Place charity in Newcastle.

"We're all doing well, thank you," he responded.

"And obviously Catherine?" she pushed, to which he responded again, "We're all doing well."

King Charles became emotional as he spoke about the 'shock' of being diagnosed with cancer as he returns to public duties. Photo: Getty

It comes after King Charles reportedly became emotional as he opened up about the 'shock' of being diagnosed with cancer during his return to public duties. The King took time off after receiving the diagnosis, but after being given the OK by his medical team, he is back at work.

Charles and his wife Queen Camilla attended the University College Hospital Macmillan Cancer Centre in London last week as their first official engagement in months.

According to The Mirror, Charles appeared emotional during the visit, and after one patient mentioned her chemotherapy, he told her," I’ve got to have my treatment this afternoon as well."

When someone else asked him how he was coping, he said, "I'm all right, thank you very much – not too bad."

Speaking about the moment he found out about his diagnosis, Charles told one patient, "It’s always a bit of a shock, isn’t it, when they tell you?"

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