 In 1940 , the Barker 's live @-@ in maid retired , and Dorothy Barker closed her school at the back of the house in The Waldrons . She continued to supervise the household , and to give both her mother and sister the care they needed . Dorothy and her sister collaborated upon only two books : Our Darling 's First Book and the Christian @-@ themed , He Leadeth Me . In 1954 Dorothy Barker died of a heart attack . Barker was unable to pursue her art to any significant extent following her sister 's death , as all the care of her aged mother devolved upon her , but she did manage to begin planning a stained glass window design in her sister 's memory for St. Edmund 's , Pitlake . 
