These 'prison of the mind' / culty films (much like Going Clear: Scientology & the Prison of Belief and Leah Remini: Scientology and the Aftermath) drive me batty.
Sins of Our Mother, of course, takes things to a whole new extreme, Lori Vallow having ordered the murders of as many people as she has married: five.
Heartbreaking and infuriating, all at the same time.