Does blood money or expiation become due for a mother who aborted twins as a result of her angry actions before her death?

What your mother did by hitting the bed with her body is an apparent cause for the miscarriage, and she incurs sin thereby. There are two scenarios:

1. Before the fetus completes four months: She is only required to repent. 2. After completing four months: She is liable for blood money (Diyah) and expiation (Kaffarah): Blood Money (Diyah): Five camels for each fetus, to be paid by the mother's 'Aqilah (male relatives on the father's side) to the heirs of the fetus. The mother does not inherit anything from it. If the heirs pardon her, it is remitted. Expiation (Kaffarah): Freeing a believing slave. If none is found, then fasting for two consecutive months for each fetus. It is permissible for a guardian, a relative, or a stranger to fast on her behalf.