Thinking back to the person who you've seen do this job best, what made their performance so outstanding?
Most managers' ears will perk up at this question, because it signals that you care not just about being average or even good, but truly great. This is the question managers wish all their employees would ask.
That's a pretty good question to ask, but remember to also pay attention to what your interviewer is saying throughout the interview so you can tailor specific questions to what you both discussed. This will show her that you're good at paying attention and processing information. What kind of questions have you asked during an interview?