Kate Garraway has responded to a fan on social media after they gave the Good Morning Britain presenter some touching advice as her husband Derek Draper continues to battle with his health after being hospitalised with Covid-19.MORE: Kate Garraway reveals emotional reason she's been spending time offlineWATCH: Kate Garraway explains how Piers Morgan helped her amid Derek's coronavirus battleThe message that Kate retweeted read: "Keep going with the messages he is hang on, for a reason, for you,