Lillian was among that first group of American Baha’is to be active in teaching the Faith at the turn of the 20th century. She pioneered to Persia, in 1911 to serve Dr. Susan Moody. Lillian had spent years in the face of unnumbered difficulties to build up Persia's Tarbiyat School for Girls in Tihran. She was much loved by students and staff, and her services highly valued, by 'Abdu'l-Baha. She died of typhus on December 1st, 1920. Hundreds of weeping mourners accompanied her coffin to its place near the Tomb of great Varqa. Soon a cable soon came from the Master in which He indicated that “Miss Kappes [is] very happy. I invite [the] world [to] be not grieved.” (Adapted from ‘Historical Dictionary of the Baha’i Faith’ by Hugh Adamson and ‘Arches of the Years’, by Marzieh Gail, p. 211)