actually I wouldn`t be too critical of the little girl. I believe this would be the fifth similiar case I`ve read. which a child believe thier own death will solve problems. at that age the self-preservation systems has not fully developed yet in the brain. it the very reason most clinics focus on teen suicides more than adults.
the only lesson here is for parents to be more carefull what they say around thier kids.which they should of done anyway.