By Victoria Johns ITV viewers admitted they were “broken” after watching Kate Garraway’s documentary: Derek’s Story last night. In the final film about her late husband, who sadly died in January after contracting Covid in 2020, the Good Morning Britain host, 56, highlighted the staggering cost of Derek’s round-the clock care, which she said had caused her to rack up huge debts worth £800k. Insisting something needed to be done urgently to help the “extraordinary carers” or the system was “going to break”, Kate looked like she had the weight of the world on her shoulders. Responding to the sad…