I know the young gal's dad. I won't assume anything was going on.
However, like JuanR, I would not put myself into that situation. Drunk or not. You would not find me alone with a young woman in my vehicle. In this day and age, you are guilty the minute someone points the finger at you. If she accuses, you loses.
I don't drink at all anymore, but I won't even take my daughter's friends home without another person in the car. Not because I don't trust myself. And I think I trust them too, but I just won't put myself into that situation. Nope.
#metoo has taken this innocent activity and turned all situations such as this into questionable/nondefendable predicaments