By Mark Jefferies Kate Garraway vowed to be with husband Derek Draper in sickness and in health and followed their wedding vows to the letter, looking after him alongside expert carers until his last breath. But in a new film she will also explain how his round-the-clock treatment had a £16,000 monthly cost which was more than her salary from ITV and has caused her to rack up huge debts. The TV star announced that her husband had died at the age of 56 in January, after a lengthy battle with the long-term effects of Covid. The final year of his life is documented in a new ITV programme, in whic…