Niki laughing at him made Theo feel insecure and he stepped back into the tree a little more, rubbing the elbow of the hand he had at his mouth in a nervy way.
He shook his head now but looked down and noticed that he was. There wasn't enough really for him to smear over his fingertips, but he tried and then drew something in the space between them and hissed words in some forgotten language, resulting in... nothing. He still didn't have a wand so none of his magic worked.
He watched to see what would happen, turned his head at hearing... something... and then looked back to Niki, tilting his head curiously. "How did you get in here?"