I'm going to decide to not sell a car to a woman who didn't show up on time
Why wouldn't you sell a car to her?
She drove an hour to come see it and she made me wait for her for half an hour.
I understand that you are upset about a woman showing up late to a showing of your car, but pulling the deal from her out of vindictiveness is not in your best interest. Set aside your hurt feelings and act professionally.
Fuck off.
Why the hostility? All I'm saying is that you should reconsider selling her the car.