Such a beautiful end for such a tragic lady. Fortunately (or unfortunately) the Val'kyr won't leave her that way and she will be returned to the unlivng.
During the Undead campaign of Warcraft III you killed her and turned her into a slave. After the defeat of the scourge at the end of Warcraft III she formed a loose group of undead who weren't particularly happy with being zombies, slaves to the demons, or hunted and killed by the Alliance so she claimed a ruined city as her own and made the best of things.