What Justice is this?

Yes thats BS Law..... The law has this statement in its underarms.... Thats a person younger than 18 has a tendency of following what others do without knowing right from wrong.. So they always end up getting lesser punishment. though in this case it is clear that the 17 year old gal should have been old enough to know that stamping a persons fingers hurts... May be some one should have done the same to her to teach her something.... not only to her but all the people involved.