Kate Garraway is writing a book about her husband’s hellish Covid-19 battle.The TV host has penned The Power Of Hope, which will tell the family’s "raw and emotional" story.Derek Draper, 53, is still in hospital after Covid-19 made him lose eight stone, develop diabetes and suffer holes in his lungs and heart.Mum-of-two Kate, 53, said: "I hope to be able to reach out to others who are suffering."Kate, who had her first Christmas without Derek present in 2020, recently opened up about the struggles of homeschooling her children without her husband around to help.Speaking on Good Morning Britain last week, she shared: "It's Friday and I think its a collective sigh of relief to anybody who's locked int the torture of homeschooling."I think.