A woman miscarried and did not know, so she stopped praying. Does she have to make up the missed prayers?

Question:
May Allah reward you. This questioner says: A woman miscarried one month after becoming pregnant, and she did not know that she had miscarried; rather, she thought it was her monthly period. When she went back to the doctor, the doctor told her that she had miscarried. What is the ruling on the prayers she missed? Does she have to make them up?

Answer:
Yes, yes, it is obligatory to make them up. If the fetus is expelled before the stage of the lump of flesh (mudghah), then the blood that follows is not considered post-natal bleeding (nifas); it is merely bleeding. Therefore, if she miscarries within the second forty days, up to eighty days, all of this blood has no ruling; it is bleeding, and she does not leave off the prayer. If she did leave it off, she must make it up. However, if it enters the third forty days, the stage of the lump of flesh, and the creation of a human being becomes apparent in it, then the blood that comes after its expulsion is post-natal bleeding (nifas). Yes.