Reference: Fataawa Ramadhaan – Volume 2, Page 610, Fatwa No.605
Majmoo’ Fataawa libni Baaz – Volume 3, Page 200
Question: A man had sexual intercourse with his wife during the day in Ramadhaan and [as such] he has fasted the penalty (kaffaarah) of two months consecutively. So, is there anything required of his wife or not? May Allaah reward you.
Response: In the name of Allaah and all Praise is for Allaah [alone]. That which is required of her is similar to that which was required of him (her husband) if she willfully consented and was not forced. If it is difficult for her [to fast two consecutive months], then she may feed sixty poor and needy people the amount of half a saa’ per poor and needy person. However, if she was coerced with force and severe beating, nothing is required of her. Rather, the sin is [solely] upon him (her husband). If she was complacent with him, then she is required to pay the penalty (kaffaarah) similar to him – like for like.