Answered by Shaykh Amjad Rasheed
If a woman makes love to her husband, and then performs a ghusl and after the ghusl, some sperm exits from her, is it obligatory for her to repeat the ghusl?
If the woman had fulfilled her desire during the intercourse, then it is obligatory for her to repeat her ghusl, if she sees sperm exiting from her. This is because this could be her [s. sexual fluid] or his sperm, and it is obligatory for a person to take a ghusl when their own [s. sexual fluid or sperm] exits from them.
However, if she had not fulfilled her desire, such as if she was sick, or sleeping, or was forced, then, what is exiting from her is her husband’s sperm. In this case, she does not need to repeat her ghusl, but it does invalidate her wudu.
[Translated by Sr. Shazia Ahmad]