[Knight of Gondor]

I took a look, and I say that it's contestable at best as to whether or not that's Arwen. I ran it frame-by-frame (that's a very blurry sequence), and saw one person's blurry but un-Arwen looking face holding a blurry sword that didn't look Rohan-ish. I am in doubt as to whether or not that would be her. (And how would she have gotten so close to the line of Uruks that were driven back by Eomer's forces? As I recall, the Rohan soldiers were a little further back, near the causeway.