The context of the following conversation is Robin assumed Sydney's expression was one of anger, because Sydney was yelling at the time.:
Robin says Sydney, I think you need to calm down a bit..
The friend responds What you talking about, I am not mad..
Robin responds Yes I think you are because you are yelling right now and your brows are narrow..
The friend responds Oh, maybe you are right I was just so angry.
Robin responds Its ok just take a deep breath.