By the time Arithmacy came to an end, she was shaking with nerves. Her timing had to be impeccable. Biting her lip, she stuffed her notes, ink well, and quill into her satchel. And then pretended to be looking for something in it while watching him out of the corner of her eye. As he went towards the exit, she jumped up, swinging her satchel wildly behind her, and collided into him as she came out of the door.