Is repentance sufficient after a miscarriage at four weeks, and is anything else required of her?

Abortion is legally forbidden unless there is a valid justification, such as fear for the mother's life. It is forbidden for a doctor to assist in it, due to the Almighty's saying: "And do not cooperate in sin and aggression." The prohibition is further emphasized if it is for concealing adultery or for birth control. Repentance is obligatory for the doctor and the woman. Blood money (diyah) and expiation (kaffarah) are not obligatory due to the absence of formation [of the fetus], and they must frequently seek forgiveness and perform righteous deeds.