ANSWER: She must fast the missed fasts first & the best thing she can do is make double intention of fasting the missed days as well as the sunnah fasts and she would get double reward.

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ANSWER: You can combine mandatory fasts with Monday, Thursdays, a’shora and the 9 days of thulhijjah. 

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ANSWER: No, the kaffarah is not the same as it is only for intercourse during the day time of Ramadan. She must only keep that fast again. If he forced her and she was not willing all the time, her fast is valid. https://islamqa.info/en/answers/40242/does-expiation-have-to-be-offered-for-having-intercourse-when-making-up-a-missed-ramadaan-fast

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