I want to say that it mean many things: Though she loves to use her voice, she feels insecure to. I think this because, as she goes on, she tells the readers about her teeth gap, and how she loved her voice, and how others loved it too. Maybe then she feels restricted from living the lives of others, but it would feel more normal to not have a gap in her teeth than speak.
He chases her all around the woods, trying to convince her of how completely awesome he is. Daphne is not having it, however, and just keeps on running.
