Zeo heard a feminine voice inside his head. His eyes went wide and he looked around, seeing no one else besides the three of them, it had to be this dragon he was talking to. He tilted his head at it, "Did you just speak into my mind?" This was new to him, as he had never known a dragon could do that before, it seemed a little scary. He shivered a little as he wondered what else this dragon could do. 

He also heard her explain about helping to teach human students. It seemed weird to him, because as far as he knew dragons and humans learned from each other, through companion ship. And this 'teaching' seemed one sided. Although he did want to learn more, he would wait patiently for her to answer his question before he asked any more questions.