Shared by B. Handal, whose researched mentioned below can be found at at bahai-library.com/handal_varqa_ruhullah_stories and elsewhere. He notes: "As part of my research on the Varqá family, I have received the following document entitled 'Bibi Tuba, the sister of the martyr Varqá,' written by Vedad Theophilus, a member of the family." [-B.H. 2021]