I think they just have to introduce enough reasonable doubt that the jury can't convict. I I think the professional testimonies in this will have a big bearing and how well the defence witnesses can undermine the prosecution ones.I do wonder though if LL knew this would be the evidence put forward why has she pled not guilty? Unless she actually is not guilty? I know that I could not sit and listen to all the horrific things I had done to those poor infants played out in court when I knew I had done it and they had overwhelming evidence. I wonder what her defence will be.
I guess if she is guilty then she thinks it's better to take her chances on a not guilty verdict