For women who missed some days of fasting during Ramadan due to their menstruation or other accepted excuses, which one should they make first, their missed days of Ramadan or 6 days of Shawwal? Below sheds light on the question

Praise be to Allah.

If she wants to earn the reward mentioned in the hadeeth of the Prophet (peace and blessings of Allaah be upon him), “Whoever fasts Ramadaan then follows it with six days of Shawwaal, it will be as if he fasted for a lifetime”

(reported by Muslim, no. 1984), then she should complete her Ramadaan fasts first, then follow it with six days of Shawwaal, so that the hadeeth will be applicable to her too, and she will gain the reward mentioned in it.

https://islamqa.info/en/answers/4082/should-a-woman-start-with-making-up-missed-fasts-from-ramadaan-or-with-the-six-days-of-shawwaal