My minor daughter was offered an alcoholic drink in a chain restaurant.

The bartender had made "extra" and told the waitress she could give to someone for free. My daughter didn't even know it had alcohol until she tasted it. She is 19, and shared the drink with a 18 year old friend. With our zero tolerance policy for alcohol limits in minors, if she had been in an accident, etc., she would have gone to jail. Do I have a case against the restaurant? They verified that the story is true.