What is the ruling of Islamic law regarding a woman who, by hitting her pregnant sister-in-law, caused the abortion of her fetus in the ninth month?

If doctors determine that the miscarriage was caused by the husband’s sister striking the woman, then the husband’s sister is responsible for this offense. She must pay the diyah (blood money) for the fetus to its heirs, which is five camels (or 212.5 grams of gold). Some scholars hold that it is obligatory upon her aqilah (male agnatic relatives responsible for paying blood money). She is also obligated to perform an expiation (kaffarah), according to the majority of scholars, which is the freeing of a slave. If she cannot find one, then it is fasting for two consecutive months.