The Gathering is the 23th installment of the World of Warcraft comic. The story has been written by Walter and Louise Simonson and was released 2009. There they say that she looks surprisingly human.
Maybe it's the special genetic mix that removes all the typical traits from orcs and draenei and only leaves the humanoid ones. Fact is, that the movie just follows the lore when depicting her looking like a female human with tiny tusks and pointy ears. She was on the cover of the comic "Conflicting Loyalities" and there she also looks very human just with white/pink Draenei eyes:
So the thing missing in the movie is her having glowing/white eyes:
But having glowing eyes makes it hard to read any emotions except rage.