Princess Kate and King Charles are enduring “emotional hardship” after being diagnosed with cancer earlier this year, a cancer specialist has claimed. The Princess of Wales announced in March that she had undergone preventative chemotherapy after cancer was found in tests following a significant abdominal surgery. In a statement, the royal confirmed that she would not be undertaking public duties for the foreseeable future to focus on her health. Despite making an appearance at Trooping the Colour on Saturday, the Palace confirmed Kate is not currently returning to her royal duties. King Charl…