social studies

This evening, I was glued to the American Experience about Dolley Madison. Miss M sat down with me, asking, "who was she?" I explained at some (too much) length, then M said, "So she was the first president."
"No, she was a first lady."
"She was the first lady president."
"No. She was a wife {sigh}. We've never had a woman president."
"I can't remember what to call that semi president."
"Vice President?"
"Yeah. What does he do again?"