By Mark Jefferies Kate Garraway has bravely spoken about how her marriage changed as husband Derek Draper battled the effects of Covid for nearly four years. Derek will be shown in a new ITV documentary, speaking in brief snatches and gazing at his wife adoringly in the months before his death in January. Discussing in the film the mixture of emotions she feels for her husband of 19 years, Kate says she has accepted her role as a round-the-clock carer. She adds: “But how that translates into the relationship is a work in progress. Sometimes you show love with a big bunch of flowers, sometimes …