Let the authorities take their own time to change their mind. What is our immediate duty? If the limit fixed by the law for a girl's marriage is 14, 16, 18 or whatever, let us celebrate it immediately on her attaining this age. We must prepare for the day in advance, deciding in the groom and making all other arrangements for the wedding. It would be reprehensible on our part to prolong the period of waiting after a girl begins to feel the biological urge and the consequent emotional disturbance. It is one thing if the marriage gets postponed owing to circumstances beyond our control, but quite another if we do not exert ourselves sufficiently to conduct it in time.
For a general background, please see here