An increasing number of children in the US are questioning their gender identity and seeking professional support at transgender clinics. Because of their age, the complex and emotional journey is as much their parents' as their own. 'Living with a Secret' is the story of Amber, a soft-spoken, feminine 12-year-old who loves Hello Kitty and fashion design. When she was 10, she stopped going by her given name, Aaron, and began dressing as a girl.