A sick nursery teacher who sat on her partner's four-year-old daughter in the bath until she drowned carried out the horrific act for a chilling reason. Amber Lee Hughes raped and killed her partner's daughter, Nada-Jane Challita, after the tot's dad, Elie, left her with Hughes while he went to a job interview. After Elie left, Hughes was outraged that her partner had not kissed her goodbye, believing that he had been unfaithful. "You broke my heart; I'm going to burn yours. How could you do