One typical m.o. is to tell women that the Lama is a representative of the Buddha and the Holy Dharma, and only has the students' best interests at heart. So they should trust him completely, and follow his word.
I think part of the hook for June Campbell, after she recovered from the shock of what he was proposing, was the sense that it was an honor to be chosen as a consort. In Tibetan Buddhist culture, the girls and their parents are told that the girl has been chosen as a "Buddha mother", or a goddess. I don't know that he told June outright that it was an honor to be chosen for this role. She does discuss in her book how it all came about, and her reactions.
I think part of the hook for June Campbell, after she recovered from the shock of what he was proposing, was the sense that it was an honor to be chosen as a consort. In Tibetan Buddhist culture, the girls and their parents are told that the girl has been chosen as a "Buddha mother", or a goddess. I don't know that he told June outright that it was an honor to be chosen for this role. She does discuss in her book how it all came about, and her reactions.