The Fleeing Old Lady

Just as I started to reverse into my apartment's parking space, a light car coming from behind bumped into me. Even calling it a rear-end collision is a stretch; it was a soft tap, more of a 'clink'.
It was a hassle, so I stayed in my car and waited for the other party to come over, but for some reason, they wouldn't get out. Looking in the mirror, I saw the driver was an old lady. She was gripping the steering wheel tightly, staring intently at the area around my trunk.
I wondered what on earth she was doing, or if she perhaps hadn't realized she'd hit me, when I suddenly felt as if my car was being pushed. It occurred to me that the old lady might be panicking and pressing down on the accelerator. That would be quite troublesome.
I quickly pulled over to the shoulder, and the old lady sped off without a second glance. I was thoroughly amazed at how irresponsible she was, but there was nothing I could do since she had already left.
I checked the back of my car, but there didn't seem to be any particular dents. My car was already covered in small scratches, so it was impossible to tell which one was from this little bump. Besides, I actually thought it might have been my fault for reversing into her. If that were the case, I couldn't exactly blame the old lady entirely. So, I decided to let her hit-and-run slide.

After I parked my car, the landlord came out of the house. We were chatting for a while when a car I recognized appeared. It was the old lady from earlier.
This time, the old lady got out of her car and began to make excuses: 'Um, I'm so sorry about earlier. I had an appointment to meet someone, and I was so flustered...'
It seemed she had gone to meet the person she had the appointment with, but they told her that a hit-and-run was unacceptable and that she should go back and apologize immediately, so she had returned feeling quite gloomy. Perhaps she had been scolded quite severely, because she kept repeating 'I'm sorry' over and over, and finally pulled 10,000 yen out of her wallet.
Since my car was already covered in scratches and I might have been the one who reversed into her, I refused the money, but the old lady wouldn't have it. She insisted that it wouldn't do, and that I absolutely had to take it. Since there was no end to it, I eventually accepted it.

With that, the old lady left looking relieved, and the landlord remarked with admiration, 'You really have no greed, do you?'