How do I ask my neighbor not to take liberties with my driveway?

I work out of my office on the ground floor of our home overlooking the street with partial view of our driveway. Every day, several times a day, a neighbor uses our driveway as a turnaround instead of using the intersection one house down, or her own driveway. My big problem with this is that she is using our private property for public use. I also find this distracting when I'm working as every time she pulls into the driveway I think someone is visiting. I'm having a difficult time deciding how to approach this as I want to remain friendly with my neighbor, and don't want to come off as an unbearable jerk for just asking her not to use my property. How would you approach this situation?