Literally the only RATIONAL reason for this is if she was choosing to let him kill her, because she knows damn well that she cannot get herself out of that situation. She is not that stupid.
But if it's not that, then there's another PLOT HOLE.
Why does Ryan insist on dropping a bridge on
Emma?!
That instagram account previously posted a photo of Dot crying with "RIP Bette" caption, so if I were you I'd wait until the episode ends, before mourning.