By Chiara Fiorillo Prince Harry and Meghan Markle have a “perfect opportunity” to repair their rift with the Royal Family after the Princess of Wales announced she is receiving treatment for cancer, a royal expert has said. Prince William’s wife Catherine released an emotional video message on Friday in which she spoke about the “huge shock” of the medical development and how her family have experienced an “incredibly tough couple of months” as her voice cracked with feeling. The princess was admitted to hospital for abdominal surgery on January 16 and at the time her condition was thought to …