OP, even you admit she was genuinely concerned about you. That's becoming a rare trait to find these days and not something to scoff at and make fun of through sarcasm. As to her reference to "crazies," it's very likely she meant drivers who don't adjust their driving habits in inclement weather. Rather than thanking her, you made fun of her. Not very gentlemanly behavior, I must say. Next time you stop in the bakery if you see this woman, I hope you act the gentleman.