The `Hero` hitmaker stars in harrowing movie `Precious` - based on best-selling novel `Push` about an obese teenager who has two children through incestuous rape - and believes her music has helped girls in similar situations to the main character. She said: "There are a lot of girls that I see at my shows that may fit the description of what people might think a `Precious` girl is. When I sing certain songs, you really see that it brings out emotions in them. "I see tears of gratitude or joy because they relate to the message. So that`s why I continue to do songs that I feel will be uplifting." Mariah - who plays a social worker in the film - said she could relate to the plight of the characters in `Push`, but it also made her more aware of other people`s suffering. She added to Parade magazine: "I guess the button that the story pushed in me would be just empathy. I mean your heart has to go out to Precious because she is going through so much. It touched me as a woman. It touched me just as a person. "It`s like you think, `Maybe I`ve walked past someone who is a girl like this and not really focused on them or just totally ignored them.` "And it`s also one of those things where you relate something in yourself, your own feelings of doubt and negativity. And while you haven`t suffered nearly as much, you know what you`ve gone through is similar."