Drinking and driving puts others on the road and pedestrians at risk. You can't say her actions didn't put kids at risk. Her actions - at least behind the wheel - put the public at risk. 

On top of that, a cop was totally cool to her, telling her to make sure she doesn't drive home - it was fair warning. It takes some seriously poor judgement to go against a cop's advice and drive anyway. Such a waste of a career.