Is a woman required to first fast the days she missed in Ramadan due to menstruation, and then follow that with fasting six days of Shawwal, or vice versa?

To attain the reward mentioned in the hadith: "Whoever fasts Ramadan then follows it with six days of Shawwal, it is as if he has fasted the entire year," one must first complete the fasting of Ramadan and then follow it with fasting six days of Shawwal. As for permissibility, it is permissible to delay making up missed days of Ramadan until before the entry of the next Ramadan.