All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
According to the most preponderant opinion of the scholars, what this woman sees is post- partum bleeding because it is bleeding that came out after abortion, so it is post-partum bleeding. In this case, she should refrain from praying till the blood stops completely or till she completes forty days from the day of abortion.
However, some scholars are of the view that if the aborted fetus has already taken the form or shape of a human being, then the bleeding is post-partum bleeding.
If the fetus did not take full human form, and it was only in the stage of sperm or leech, then the bleeding is not post partum bleeding; hence, the woman should not give up praying or fasting.
Allah knows best.