My lips smile but my soul crys blood

Enthea has a good life. Her dad is the best car racer in the world and Enthea isn't that bad herself. Her family and friends loves her and she loves them too. But something's missing. Enthea has a hole in her heart that never can be properly filled. Everyone thinks she's so happy but is she really?
When life's not worth living, can Enthea find a reason to keep on going?