Yes. Obviously, it would have been far preferable for the enabled drunk kid to have driven head-on into a family on her way home over those narrow, windy Boxford roads.
I agree on "zero tolerance," incidentally. I think the principal should be fired for this.
There’s no guarantee that would have been the outcome and it’s not her responsibility either way. If she’s constantly making herself available as a free ride for her friends to drink then she is enabling them, because they know they can use her as an escape route every time. If she said no then the other kid would have had more difficulty getting out of her jam and would have thought twice about getting herself into that situation the next time.