What is the ruling on a Muslim woman marrying a non-Muslim, when she is forced to do so?

A Muslim woman is not permitted to marry a non-Muslim, and such a marriage is invalid, based on the Almighty’s saying: (And do not marry polytheistic men [to your women] until they believe) and (If you ascertain that they are believers, then do not return them to the disbelievers; they are not lawful [as wives] for them, nor are they lawful [as husbands] for them). Being forced into such a marriage does not justify her submission, for the Prophet (peace be upon him) said: "There is no obedience to a creature in defiance of the Creator." This marriage is considered null and void, and any sexual intercourse within it is considered unlawful sexual relations (zina).