So why the change in mask? If the place she was going to was so rewarding, why is there a need to change from Heaven to Hell? Also, if you watched Death Billiard, the old dude smiled triumphantly as he was sent to Hell. I don't think this idea stands.
Because for her it was akin to heaven, and when the elevator closed it either returned to objective state(void) or to ginti's subjective status(void).
Number of works of fiction that made me shed at least one tear: 3