If she could choose, i would not really be surprised if she wanted the "ressing the dead as forsaken" ability for herself. Why have Val'kyr when she could just do it by herself?
It would also be a pretty great character development, since it would connect her more to the nearly-lichking-but-serves-the-horde thing she has been building up since Cata. Would be great to see a real undead necromancer be a leader in the horde, ressing the enemy dead during a battle