Tartlemon, Arias does appear at times to show that she enjoying everyone being so wrong - almost as though she enjoys hearing trained professionals give testimony of what happened, and, giving the impression of joy that she has everyone mixed up, fooled, turned around.
I'm not sure if I am making my opinion clear - or understandable. IMO, Arias is guilty of First Degree Murder - I believe that Arias pre-planned the murder of Travis Alexander. Yet, at times, Arias' behavior makes me feel as though Arias is very pleased knowing that no one has figured out exactly how she murdered Travis Alexander.