They haven't heard from mental health experts because from what I understand, Baez is saving them for the penalty phase which brings up the question as to WHY he didn't bring them in during the sentencing phase. Don't you find that strange? Wouldn't a mental health expert be more qualified to diagnose her behaviour versus a "grief" expert who has no psychiatry nor psychology degree nor has she examined Casey nor did she know anything about this case?
I would have to believe that a juror with a lick of common sense would realize that if Casey is on trial for 1st degree murder, she was evaluated and deemed competent to stand trial. There was no insanity plea nor was there any evidence to suggest Caylee drowned. Again, any juror with common sense would ask themselves if this was accidental, why in the world would Casey be sitting in jail for 3 years and not admit it sooner? Why wait until OS to say Caylee accidentally drowned. It makes absolutely no sense.
Keep in mind I am writing opinion from my own perspective based strictly on the presentation within the trial and without regard to the online/TV analysts or the prevailing opinion in this forum. In fact, I only started following the case during jury selection - but I've seen most of it since then.
I don't think the defense presented any mental health experts because they could not find any which would help their case. I think they believed that in the absence of any mental health experts (State or Defense) that this witness would become the defacto one. I actually think it was a smart move.
You bring up a very good point: "any juror with common sense would ask themselves if this was accidental, why in the world would Casey be sitting in jail for 3 years and not admit it sooner?"
I personally believe JB addressed this (from the defense perspective) in his opening statement when he claimed GA shouted "you'll go to jail for child neglect for the rest of your life!"
I believe the point of that was to indicate that ICA (ignorant of the law) was afraid that even an accidental death would put her away for life, and that the cover-up soon reached the point of no return - in that there was enough even with an admitted accidental death, to put her away for a while or that the State became intent on prosecuting her for first degree regardless of what she said.