Glad you made that last point as wasn't sure if it was just me. That line seemed noticeably off.Thought it was a great film and liked how it's not afraid to provoke Me and the wife were really annoyed when Ryan was in on the act after being tricked into the whole rom com vibe but I guess it calls out to the male audience and especially the young watchers that it's not ok to be a bystander and part of a pack when these sort of crimes against women occur. Alison Brie's character and the Principle are equally at fault and called out so I don't see how men can take issue.
I interpreted that Cassie may have orchestrated her death at the end especially with all the setups in place if she disappeared. Was one of the cuffs loose on purpose? Was she giving the guy a chance to prove he'd changed as she seemed to give the guys who took her home a few opportunities to stop the assaults?
The only negative is minor and that was Ryan calling her a failure. I thought that was off character.