The final part of Fanny Dinnis’s life was spent in New York and in Glencoe, Cook, Illinois. From the New York State Census of 1925 we know Fanny was aged 79 and living with her daughter, Edith Beatrice, son-in-law Alexander Saunders, two of their children (Alexander and Irma) daughter-in-law Lorna and grandson, Alex Saunders, age 2.
Alexander, the head of the family was aged 60, his son Alexander, 23, and both list their occupation as Insurance Agents.
Fanny’s death is listed in the Illinois Death Index on 19 February 1930, she would have been 84. The burial took place in Evanston, Cook, Illinois on 21 February 1930. It also mentions Fanny had been a resident in the city where her death occured (Glencoe, Illinois) for 3 months 19 days.
This is all the information I have at the moment, but in the following months I am sure to have some added sources which I will update.