She is roped in. Her pride depends on projecting her own satisfaction with her lot to family and friends. Her pride depends on believing that her husband is devoted to her and, when that is no longer possible, convincing others anyway. The husband's violence against her contradicts everything she has been taught about life, marriage, love, and the sanctity of the family. Regardless of the circumstances in which she grew up, she has been taught to believe in romantic love and the essential perfection of married life.
Failure is personal.
Individuals fail because of what is wrong with them. The troubles of individuals, pervasive as they are, do not reflect on the institution of marriage, nor do they negate her belief in the happy ending, promised everywhere as the final result of male-female conflict. Marriage is intrinsically good. Marriage is a woman's proper goal. Wife-beating is not on a woman's map of the world when she marries.