By Emma Mackenzie The news that Kate had been diagnosed with cancer and had begun preventative chemotherapy for her condition shocked the nation. The Princess of Wales made the announcement in an emotional video message, which saw Kate sitting alone on a bench – dressed simply in a striped jumper and jeans – as she explained the news about her health directly to the public. Whilst the mum-of-three paid tribute to her husband Prince William in her video message, noting that “having William by my side is a great source of comfort and reassurance too” as she faces this health challenge, there was…