Even in high school, he exhibited this antisocial/weird behavior. It makes one wonder HOW he ever got into college to begin with and then, HOW he got to being a senior.
I wish I could still talk with my mother, but when she was alive, we talked every day. My daughter and I talk at least once a day with each other and she is also big on IMing too.
Isolation makes people go nuts and Cho inflicted this state upon himself.
I’m sorry for the loss of your Mom but I’m so glad you talk to your daughter every day. That’s great!