"Delinquency of a minor" means a criminal offense committed by a minor.
http://criminal.findlaw.com/criminal...f-a-minor.html
Disobeying parents is not a criminal offense. If it were, I would've gotten the death penalty.
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I don't think that a judge will issue a restraining order just because the parents don't want him hanging around the daughter. Remember that they do go to college together. If they are in the same class and have to work together, why would a judge issue a restraining order to interfere with that, without a good reason?

