Who was Barbara's mother a follower of?
Byron v. Rajneesh Foundation International:  Byron had been recruited to join the Rajneesh movement by her daughter, Barbara. Rajneesh movement: The Rajneesh movement comprises persons inspired by the Indian mystic Bhagwan Shree Rajneesh (1931–1990), also known as Osho, particularly initiated disciples who are referred to as "neo-sannyasins" or simply "sannyasins".
Bhagwan Shree Rajneesh