JMO, some people are ready to hang NV right now and we really know hardly any true facts. You have to admit, the combined reports of both twins being injured with NV around casts all the suspicion and blame on her right off. Combining both twins injuries pushes it over the top and Leon's death can't be seen as one unfortunate accidental event.
Leave the one twin's genital injuries out of it, and just for a minute consider only what happened to Leon. He was left in NV's care while the parents rushed to the hospital with the other twin.
NV was caring for Leon, and we'll assume, inexperienced, and not used to providing the constant care an infant requires. She went to get a bottle for him. He wasn't secured in that bounce chair, as I think I understand it, and the fatal accident occurred. Negligence of an inexperienced childcare provider.
Her Defense attorney will probably want to get the Jurors to see it as an isolated incident, not combined with the other twin's injuries. Or her attorney will have to challenge that NV had nothing to do with the one twin's genital injuries, and Leon's death was an accident.