Mary Anne Harfield

In the novel The Mystery of the Blue Train, Mary Anne Harfield was married to Samuel Harfield, a cousin of Jane Harfield's husband. Neither she or her husband ever visited Jane, but they wanted her money after Jane passed away. But Jane left it in her will to her companion Katherine Grey. Mary Anne wrote to Katherine trying to persuade her to give up the inheritance but with no luck. Neither by implying that the court would make the will invalid or by flattering Katherine.