I kind of agree with Old Fart on the go-kart, however I would suggest an empty parking lot instead of low traffic if she's having that much trouble. I didn't learn to drive until I was just about 18. My mom refused to teach me because of South Carolina's laws on the matter. If I had even my learners permit it was required that I be on her insurance. Which would have sent the bill up another 100.00 or so.

Another thing to consider is the time of day. You mentioned you two were driving in the evening. Unless you have an extremely low stress lifestyle, you both might have been a little over sensitive to what was going on. Try teaching in the morning when you haven't had to deal with the day just yet.

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"BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Will he offer me his mouth? BOY: Yes. GIRL: Will he offer me his teeth? BOY: Yes. GIRL: Will he offer me his jaws? BOY: Yes. GIRL: Will he offer me his hunger? BOY: Yes. GIRL: Again, will he offer me his hunger? BOY: Yes! GIRL: Yes. BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Yes. BOY: I bet you say that to all the boys!" -Meatloaf