David watched her carefully when she signed to him. He laughed a bit when she drew the question mark. He signed back to her the same way so she would understand it. "I can teach you... But you will have to come over to my home for me to teach you." he signed. Her signing wasn't that bad, it was pretty good, and he understood it well. He was actually glad he made a new friend, and happy it was Erin. David glanced over a bit to see the group of girls heading towards them. As of course, he wondered what was going on for a moment, being cautious as he normally did.