If you want to get technical, I think ICA is more of a Sociopath than a Psychopath. She has no conscience or empathy with others. Not quite the same as that complete lack of emotions of the true psychopath. She can most certainly feel and show fear. But it will only be self centered fear. She is fearful she will be caught, convicted, sentenced. She is not fearful that her daughter is missing, or she may be hurting her father, etc. It's all self centered.
I disagree; I see psychopathy there. She hasn't shown fear during this trial; she jokes around and flirts when the jury leaves the room; this shows that the stoic look is a presentation intended to benefit herself. And she didn't have her head down because she was fearful at the end of the day today; she was reading a document intently, and it was on her lap. Somehow, the HLN pundits missed that. JMO.