mystery woman in car

My property adjoins the far end of a business parking lot. It's rare to see any cars parked this far down in the lot.

For over a year now, a woman shows up almost every weekday in this same car. She'll stay anywhere from a few minutes to two hours. You can see her white hair just inside the driver-side window.

I know she smokes, but I have yet to see her lift a liquor bottle to her lips. I was kind of expecting that.

Wonder what she's up to.