Praise be to Allah.
If a man forces his wife to have intercourse, then she does not have to make up the day or offer expiation. This has been explained previously in the answer to question no. 106532.
If the wife did not refuse completely, such as if she gave in to her husband for fear of making him angry, or she gave in to his pressure, or she was not able to resist her own desire because her husband had provoked it, then in all these cases she is not regarded as having been forced; rather she did it willingly and she has to repent to Allah, may He be glorified and exalted, as well as make up the day and offer expiation.
Shaykh Ibn Baaz (may Allah have mercy on him) said:
She must refuse absolutely, and not let him do that, regardless of whether he gets angry or not.
If they both did that deliberately, then they both must repent and offer expiation, as well as making up that day, and they must repent sincerely for what they have done.
If he forced her and there is no doubt about that, by using his strength and hitting her, or by restraining her, then the sin is on him and there is no blame on her.
But if it is simply a matter of her being reluctant but going along with him, then she is not regarded as having been forced. Rather what she should have done is to refuse completely, for a woman knows how to refuse, unless he compelled her by force to the extent that she had no way of avoiding it, in which case Allah knows that she had no way of avoiding it.
End quote from Fataawa Noor ‘ala ad-Darb
See also the answer to question no. 106532.
And Allah knows best.