Corrie walked to her magic class with the question of Elrath’s glamour on her mind. Would he have had to keep it up deliberately in order for it to continue after his death? That certainly argued for the theory that he had committed suicide. But if the glamour would have stayed with him after he died no matter what, that didn’t tell them anything.
If he had committed suicide, she didn’t think the administration needed to worry about anyone else following him. As far as she could tell, no one had known him well, so their grief wouldn’t drive them to it. In fact, if the people wanting to know more about him had talked to Dawn in an attempt to learn something, then she doubted she would be able to find people who were actually friends with him.