I'm glad she finally found the courage to do so.
She feels all the guilt of being the one who survived, and that feeling's twisted into her somehow becoming the one who "killed" his daughter.
I'm really happy with how they handled Soo Chan's character though.
It's okay to post links to previews.
Also I never expected that Kim Kyung Soo would be the guy on the train.
Furthermore, preparations for the arranged marriage seem to be going ahead.