Princess Kate’s return to royal life has so far been shrouded in mystery, but a royal expert has suggested that there are two potential dates on which she could make her return. The Princess of Wales has been out of the public spotlight since March following the announcement of her cancer diagnosis. She addressed the nation in a personal video message announcing her diagnosis after undergoing major abdominal surgery in January and beginning chemotherapy in late February. She said at the time: “My work has always brought me a deep sense of joy and I look forward to being back when I am able.” T…