If she saw bold in these 4 days, she must consider that to be from her menstruation and she has to make up for these days. But if that was not blood, regardless of the smell, and she fasted these days in Ramadan, she doesn’t have to make up for it.

A sister is asking about her menstruation, her Menstruation is usually six days , but then she may be stress in month of Ramadan, she has 6 days bleeding , then stop for 7 days, r then again she sees very dark brown color closer to blood for 4 days with very bad smell.. ( that even her husband can feel the smell) ,she wants to know , how many day she shall make up fasting for Ramadan?