nishidurani
who did that I would Cassius bcz he knows abt the blood oath an all But then why didn't he hate Mari for trying to hurt killian or maybe even if he did he knew that she was not actually wht everyone saw she was forced to be tht way.the whilchesters made her crazy an made her do things an killian was the one who sentenced her death an tgt she was wrg bcz Cassius had no proof he couldn't save Mari but made a sacrifice so tht that she could have a second life.a second chance