Princess Kate and Prince William are reportedly “going through hell”, according to a close confidante of the couple. Amaia Arrieta, who has worked with the Prince and Princess of Wales’ children, shared her fears in the wake of Kate’s cancer diagnosis back in March. The princess has stepped back from her public-facing duties as she continues preventative chemotherapy for an undisclosed form of cancer. As yet, there has been no further information as to when the Princess of Wales will return to public duties. “I’m heartbroken at the moment, I think they are going through hell, I hope they will …