Our Law is it self not clear. Law says let 10 criminals go un-punished, but one innocent should not get punished, but law never take guarantee that these 10 criminals will not trouble our society.
Law is a dictator, it does not tolerate it self from critics. We will be punished in condemn of court, but to get over-rule the order of court we can go to higher court, is that not condemn of court, that we are not accepting the decisions on court, but that is part of law.
So what is a big thing in saying that legal age is 18 for marriage of girl, but she can marry at her own choice at the age of 15.