what is the theme of this story?

Obsession or calling is a theme. Eve Duncan always is working on a skull. She can't stop. It started when she wanted to find her own daughter but it has grown over the years. She has developed a reputation for finding lost children and bringing them home. The people around Eve believe that she is obsessed and is not getting on with her own life. Eve has come to believe that it is a calling. She can't stop because it is a calling. Is the woman obsessed or called? Can anyone answer this question? Can Eve answer it herself?