Is anything incumbent upon a woman who caused the death of her fetus by hitting her head against a wall during labor, while ignorant of the ruling?

The blood money (Diyah) is obligatory for the one who causes a miscarriage, whether intentionally or unintentionally. It is estimated at one-tenth of the mother's blood money (fifty gold dinars). The Hanafis stipulated intentionality for the mother to be liable for blood money, and some scholars preferred this opinion regarding the mother, because the general principle is that she does not abort her child. Expiation (Kaffarah) is obligatory along with the blood money according to most scholars. This expiation is the freeing of a slave; if one cannot find a slave, then fasting for two consecutive months; if one is unable to do that, then feeding sixty poor people. If one is unable to do that, then the fasting or feeding remains a debt upon them until they are able.