Nena is a space witch that lose her memory of the star crash. When she is silence, she is trying to separate her memory and possessions. When she know that her memory lose is because she want to release her love that is no longer the only thing that take her, even sometimes it's still carrying her life, she is willing to find a new life as a new person.
And like the sun we must go to let it go. because anything happened for a reason.