This was just part of the mistake, they continued to underestimate the defense team and stuck to their original charges. With the normal defense in death peanilty cases this was a great stratgey with the research suggesting that DP juries more likely to convict and older juries more likely to convict so this was a dream jury for the SA.
The problem came in when the defense was ready to fight and because they had the murder 1 and 2 charges along with the manslaughter it ended up backfiring. Because of the headline charges where so bogus given the evidence this forced the jury to look skeptically and at more depth on the child abuse and manslaughter charge.
If the SA dropped the murder charges and stuck with manslaughter they probably could have won because the jury now is not primed to look at skeptically at the charge.
True. And she cannot be tried for this case any more. I think public opinion is too much like a mob mentality in most cases like this combined with the media looking for juicy angles. Show images of a person on trial smiling and to many that means they are guilty. At least as far as few people willing to come forward at least with some explanations that people react differently to stress. Given the nature of the crime any public opinion and even media stories are bound to be negative.