Enlarge the photo and look more closely - especially her eyes. She is scared and shocked.
Took your advice and enlarged the pic. It also seems to me that part of his nose is red (consistent with being punched? - I don’t know, not much experience in that sort of thing). Also that his right temple is red and inflamed. (Near the right eye.) But, as I said, I have no experience with this sort of thing - I don’t even watch crime shows.
Enlarge the photo and look more closely - especially her eyes. She is scared and shocked.
I think you read the photo correctly. Here is what her mom had to say about it [Burning is her mom]:
....
KELLY: I don’t know if you can see the screen but this is your daughter and her boyfriend moments after the attack. There she is on the ground before the rescue crews got to her.
BURNING: Yeah, and you know it’s disturbing to me because everybody has their right to an opinion. If you really look at the photograph up close, she is not smiling… when it’s a very small photograph… she’s gritting her teeth in pain.
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http://www.humanevents.com/article.php?id=36559