Could be. The first time I heard her call herself "child of Vlaakith", I took it completely literally and assumed she was a githyanki princess, since I knew nothing about the culture, but as I played the game more I came to the conclusion that it was just what githyanki call themselves. Maybe Larian is being super clever here.
Isn't Vlaakith a lich, though? Can they even... never mind, don't want to think about it.
Its been a while since I read that issue of Dungeon that had the Githyanki invasion but I believe to remain a 'god' she consumed the essence of any Githyanki that reached...level 20? something like that, whether that makes her a literal undead Lich I don't know.
I'll be honest the extraplanar invasion plots in D&D never really grabbed my interest.
