Under Orthodox Jewish law, a woman wishing to end her marriage must be granted a bill of divorce, or a "get", by her husband. If he refuses, she becomes "chained" to him until he relents. With Jewish law considering any of her subsequent relationships adulterous and any resulting children illegitimate, a "chained" woman's only choice is to comply with the demands of her religion, or leave it.
However, this is not an easy choice to make.
See Choice. (S) (W)