 Dora was assisted and supported by her sisters, Lucy Annie Blundell (1850-1922), Fanny Blundell (1851-1937), and Margaret Helen Petrie Blundell (1866-1953), in performing her wide range of duties.As the Vicar of St Mary's Anglican Church in Caulfield (now known as Oaktree Anglican Church), Henry Langley, who later became the Dean of Melbourne, had been giving the pupils of the highly respected Shelford Girls' School weekly lessons in religious instruction for quite a number of years.In 1922, the Blundell sisters wished to give the school to the church, and they approached Archdeacon Langley, who was responsible for its temporary move from 77 Allison Road, Elsternwick, to St Mary's Jubilee School Hall.