Its crazy how she waited MONTHS after the even to apologize properly and even then she gave him a letter. Dawg if you're gonna say smth, say it to my face. Even if its intentional or not, at the end of the day, she's simply trying to save herself.
How busy was she at work that she couldn't spare enough time to go and apologize to him? Normally, she would have had to go to the student house and do a dogeza, apologizing to the whole family.
And when she finally did apologize, it was a letter, that he can read in his own free time. Bitch are you fr? I ain't reading all that. If you plan to apologize, do it, im not reading a whole Google dockey in MY free time because YOU want to keep face.
Lastly, really, all she cared was about herself, she didnt apologize cause she wanted him to have closure. She wanted her feelings to be validated. Directly quoted: "Despite how things turned out, I wanted to believe that there was meaning in everything I've done until now".
Oh it had meaning alright. She destroyed the whole concept of unity in that class. Kids get beat up, shunned. No one trusted each other anymore, walking on egg shells cause they don't want to get their face broken. I would even go so far as to say she caused permanent damage to the kids life and psyche, essentially giving them ptsd. Children are easily affected and the whole ordeal is something even adults would have trouble with especially in this story.