A Dark desire

With light there will be dark. Light can't be dark. They can't switch. Every time someone try's to change someone they love will get hurt. My name is Luna. I am a daughter of the night. I wish I could be light but that will never be. I am not mean. I wish to be light. I am strong not week.

But Who am I? I am a girl who longs to be free. I am just taped, never to be free aging. :(