Forced Marriage
Marriage must be with explicit consent of both parties and if one party has been forced into this relationship, then that party can take any legal recourse to have that marriage annulled. The situation you mentioned is an abduction and not a marriage or nikah in any sense. In such a situation, a woman should assess the circumstances and act accordingly. No fixed ruling can be given in this regard because the response of a lady may vary from situation to situation on how to survive and how to finally get out of this abduction. She is under no religious obligation to serve her abductor.