It was only fair, after all she put me through. Seeing that butt in the leather miniskirt that had teased me for three hours, it was just too cute to resist, so I got a quick feel as I followed her to the door. I'm much taller than she is, when I'm not on my knees, and I was no longer horny, so the dynamic had changed a little bit. 
She didn't really mind, and we hugged before I left.