Yazmina Oakenthorn is a night elven member of the Argent Dawn and was taken prisoner by the Scarlet Crusade in the Scarlet Enclave. When the death knights of Acherus invaded the Enclave, the prisoners traded owners.
Kaldorei death knights have a chance to execute Oakenthorn.
Involved in the following quest:
Her speech while the quest is in progress is arguably the saddest one can find in the game. The player, as a death knight, is ordered to end her life by a Scourge officer. Before blood is drawn, however, she mentions being the player's caretaker in his/her infancy, while his/her mother served at the Temple of the Moon. Realizing her life is forfeit, she orders the player to kill her, in the hopes of avoiding the player from being killed him/herself from failing to do the task.