Originally Posted by
Knslyr
I don't find it that odd that new forsaken, regardless of race align themself with the rest of the Forsaken.
It's been shown several times that raised people becomes entire different persons, few of them can hold on to who they once were, and just cling to one thing in life they really cared about, such as family.
Lilian Voss seemed to only hang on to her hatred for her father. Thomas Zelling only keept his love for his family. Nanthanos seems to only care about Sylvanas, be it loyalty, duty or love. Sylvanas is a bit of a special case, but even she were mostly just about a singular goal as well, the death of Arthas, as seen with her suicide from the Frozen Throne. Now she is even more unique though due to having find new purposes to exist.
I think it varies between people and their mental fortitude in their former life that decides how much of the person they once were they can cling to. I don't know Amalia Stones deal and what she really cared for. Delaryn died with a feeling of betrayal and hate towards Elune, perhaps that was all she kept in death.