A ghostly outline in white war plate watches the battle, and the abandonment. His hands twitch with a desire to help Kerrigan but... there's nothing to be done. His body language suggests sympathy. He has been in her place, almost down to the last moment of betrayal. He watches in pained silence, taking it all in, trying to understand her pain, while already knowing where it goes, and the desire for vengeance it will breed in her heart.

After all, the same thing happened to him.