an early marriage would at all interfere . . . utility
We may observe how totally within a masculine prerogative lie the consummation, delay, or even the value of a marriage. Values like "honour and utility" are not to be thought of in relation to women's lives. Before questioning why Mary Shelley would adopt so seemingly unfeminist a posture, we should recognize that this is exactly how Mary Wollstonecraft saw the case: see, for instance, Vindication of the Rights of Woman (12.25).