I often recommend this film to other people as a film that I think no person should ever watch because it's (the events are) so terrible, but I think everyone should see it because it's (the film is) so good.
I've wondered about that, when I first saw the film. Presumably for the leader to commit suicide of her own free will, there must have been some promise of something greater "on the other side". But then again, maybe when the martyr entered her trance, she actually wasn't seeing the other side of death, but was being possessed by some evil force from the beyond, which when it whispered in the leader's ear, it drove her so insane that she had no other choice.
Weirdly provocative film.
P.S. It has been three years since I saw the film, and I won't ever watch it again.