Not experienced with Ouija board

Melanie stared at Olivia, not knowing what aspect she was talking about that had changed in Simon. Did she mean to say that he wasn't this annoying before, who could get on someone's nerves easily?

Seeing her not speak, Olivia said, "I apologize on his behalf for what happened, I know how vexing it can turn out to be. But I hope you don't take it to heart," she offered a small smile to her. 

"I don't think I will forgive him for what he did," replied Melanie, her words were firm as she was still angry at the thought of what the vampire did. At the same time, she was curious as she hadn't seen him, and she asked, "How is he?" 

"Simon? I haven't seen him since that incident in the lunchroom. He seems to have disappeared," answered Olivia. 

When they reached the library, Melanie asked Olivia at the entrance, "What did you mean when you said that he changed?"