The whip is a little alarming, but only a little. He doesn't have a weapon outside of his Personas, but he doubts he'd use one on a child, even if they aren't normally a child.

"I know your name because you're a person I know." He speaks slowly. Not the kind of slow that would say that Amethyst doesn't understand. The kind of slow that's trying to calm her so that she doesn't attack him. "If you don't remember, that's okay."