What is the reason behind her need to be thin? To look good?
Tell her it wouldn't stop.
Even very beautiful, educated, sane women I know of refuse to cease
starving when they are born delicately perfect. The perfect
embodiment of Asian girl/womanhood.
Liposuction afterwards, brazilian butt shaping afterwards, followed
by injection in the face to remove baby fats, br*asts enlargement
etc. Tell her the quest to look slim and effortless will never
end.
If she aspires to become a model or actress one day, please tell
her personality is more important than bone/mass ratio.
Take Tyra Banks for instance.
Good luck kiddo.
If she has internet access from home, perhaps you can pass this
link to her: http://www.viiphoto.com/showstory.php?nID=538
Then tell her to have a gd laugh over this one:
http://www.youtube.com/watch?v=UkdXoGEUVRk