While at a party, Elizabeth was confronted by Rowena MacLeod when Rowena asks if she is Elizabeth Mahler. Elizabeth says that she is and asks Rowena if she knew her, Rowena says that she didn't but that she knew her from recent media gossip. Elizabeth tells her to forget about that. Rowena and Bernard then do a dance when Rowena says "Mors lumine" and Elizabeth proceeded to catch on fire, killing her and her reaper.
Later on Sam and Dean Winchester investigate Elizabeth's deaths and discover a second death, which had not been mentioned. It is revealed that Rowena had killed Elizabeth in order to kill her reaper to the attention of the new Death, Billie in order to get her son back.