Saying "I'm sorry" (A middle schooler's voice)

*I, the middle schooler, am a fictional boy.

On my way home from school, a woman in her 60s was walking in front of me. She was about the same age as my grandmother. When that woman tried to cross an intersection without traffic lights, a bicycle that came speeding from the intersecting road almost hit her. The person riding it was a woman who looked a little younger than the woman who was walking.

The woman who was walking seemed startled and dropped the bag she was holding. At that moment, a few apples rolled out of the bag. The woman on the bicycle glanced at them, said "Oh, I'm sorry," and just rode away.

I picked up the apples for her, saying, "I'm glad you didn't get hit." "I thought she would stop, so I was surprised," the woman said. I also thought the bicycle would stop. After all, there was a "Stop" sign on the road the bicycle came from, and "Stop" was also written on the road surface. In other words, that meant we had the right of way at that intersection. Besides, since bicycles are light vehicles, they must stop if there are pedestrians. That's what we learned in our school's bicycle safety class, too. Yet, that bicycle didn't stop and just rode away. It was clearly a violation of the Road Traffic Act.

Furthermore, the woman on the bicycle said "I'm sorry." Isn't "I'm sorry" a word of apology? It didn't seem like she was apologizing at all.