Nalu - The one who's always alone

Lucy Heartfilia lives with a stranger. A stranger who abuses her each and every day. She goes to school like a normal person, but its shocking at how much distance she keeps herself away from people. No one has ever heard her speak. Not even the stranger she lives with has heard her speak.
She doesn't know what friends are, and she wants to keep of that way, but some people can be pushy.
Such as the beloved Natsu Dragneel.