"Mr Terupt stood up and walked over to Peter. We watched, and he taught us like he did every day we were with him. He taught us how to forgive." P253. This shows that Mr. Terupt cares a lot about his students, he is very forgiving, and he doesn't blame Peter for what happened.
"I stood right next to Alexia now, but she remained unaware. She buried her face in Mr. Terupt's bed and sobbed. I looked at my teacher. He rested peacefully in his white bedsheets amid tubes going in and out of his body, and screens with green numbers and lines on them, beeping noises." P169. This shows how a person would look in a hospital bed, and that no matter if it was an accident a single snowball can threaten someone's life.