Ok. I don't get this.
Sylvannas, when she died for the 1st time at the hands of Arthas, according to the story on the website, her soul was at peace but Arthas brought her back as undead and she hated him for that.
Also, it seems undead who are killed the 2nd time and permanently, don't have their souls go to the same plane of peace that the souls of mortals go, but to a hellish void filled with terror.
1. How come newly risen undead don't hate Sylvannas for pulling them from their rest, as she hated Arthas ?
2. Why is Sylvannas dooming these souls to the eternal void and being fine with it ?
3. Is there any logic to this or is it "cause Metzen derp" ?