Graham, this is only my two cents worth but, why should you give a rat's left whatzits what this lady said? She was either serious, or she was trying to get you wound up. In the first case, she could just be paranoid, and in the second a bigot. I tend not to listen to either of those demographics.

Just shrug your shoulders and pity this person. These idiots we run into sometimes don't even know that they don't know.