What does a woman do if her menstrual period exceeds its usual days and she does not become pure?

Question:
The asking sister says: that her period came to her in Shawwal and it exceeded her usual days and she did not become pure. Does she pray and fast, or what is required of her?

Answer:
As long as the blood is continuous and it has the characteristics of menstruation, she should sit (abstain from prayer) as long as it is continuous, up to fifteen days. If fifteen days have passed, then she should perform the full ritual bath, fast, and pray, because it has become clear that it is blood of corruption and not blood of menstruation.