Must a wife fast 30 days to make up for the month of Ramadan she missed due to postpartum bleeding, or should she make up the number of days people actually fasted (29 or 28 days)?

If someone misses the entire month of Ramadan due to a legitimate excuse, they must make up the exact number of days. So, if Ramadan was thirty days, they fast thirty days; and if it was twenty-nine days, they fast twenty-nine days. This is the correct view according to the madhhab, based on the Almighty's saying: (A prescribed number of other days). Some scholars hold that they must fast thirty days or a lunar month, even if the preceding month was twenty-nine days. However, if one missed thirty days of Ramadan and made them up in a twenty-nine-day lunar month, they must fast one more day.