What is required of a woman who slept next to her infant daughter, then woke up to find her dead?

If a woman is not certain that her death was due to her actions, then there is nothing upon her, because the fundamental principle is the acquittal of responsibility. However, if she is certain that her death was due to her actions, then she is liable for the diyah (blood money) and kaffarah (expiation), which is the freeing of a believing slave. If she cannot find one, then it is fasting for two consecutive months.