Just finished watching the 3 episodes, I do believe she's guilty. I know the scientific evidence said there was old injuries, what I think is, she had previously hurt him. I don't believe that she only shook him that one time, she had many days where she was tired etc and I think it's extremely likely she lost her cool with him on more than one occasion.
Her statement that she gave twice said she tossed him onto the bed, her court evidence said she popped him onto the bed. Both very different things. She also said in her statements that she threw him onto the bathroom floor, but again in court said she placed him. All of these things are not the actions of a calm person. While she admitted in her statements of shaking, tossing and throwing him, what else happened that we don't know, I honestly believe that there was other times she was rough with him.
Her laughing when asked if she slammed him against anything was chilling. I don't believe it was nerves like the prosecution said, if you're on trial for murder and your life is on the line, you don't laugh with nerves, you should actually be sick to your stomach and upset if innocent.
This baby died due to a build up of physical abuse. The old injuries were caused by her, she lived in that house, she spent the majority of her time with that baby, if she felt the parents were responsible then she should/would have said but nothing from anyone interviewed ever mentioned the parents thinking they were responsible. That baby suffered physical abuse on more than one occasion. There were no bruises on the day because the damage was already done, the baby was in pain from previous abuse and damage and her shaking, throwing and tossing on the last day together was the final nail in his coffin.