Lady Blomfield joined the Bahá'í Faith in 1907 and soon became one of its outstanding proponents and historians. During the visit of 'Abdu'l-Baha to Paris, she took copious notes of His public meetings which were used in preparing the volume called "Paris Talks". As a tribute to her, 'Abdu'l-Baha bestowed upon her the name "Sitárih Khanum" (in Persian, "sitárih" means "star", and "khanum" means "lady"). After the passing of 'Abdu'l-Baha in 1921, Lady Blomfield traveled to Haifa and, while there, interviewed members of Baha'u'llah's family. Those recorded recollections, together with her account of the days when she hosted 'Abdu'l-Baha in London, make up the contents of her book, "The Chosen Highway."