Does the lady in picture shown breast feeding two kids holding a beer? I think it might be harmful to consume alcohol while breastfeeding but more strange is the choice of picture for the article.
Someone I know is a post-delivery (or "mother+baby" nurse) who just had a baby a few weeks ago. The most recent guidance is that one weak drink in a day is probably fine and the best time to have one is near the end of a feeding session. The alcohol won't have time to make it into the milk, and it gives your body time to clear the alcohol from your bloodstream before the next feeding. But you specifically shouldn't drink for at least ~2 hours before a feeding.
That said, I don't think she's drinking right now at all, just in case. Even if the alcohol clears from your bloodstream in a few hours, I would be surprised if the lingering metabolites and effect on one's endocrine system didn't effect the contents of the milk somehow.