Hope this helps some.
My husbands aunt adopted 2 girls from Korea. One has turned out pretty well, great grades, a dancer, spoiled rotten is the worst of her faults!
The other, a cheeky sort of girl - also gone bad. History of monstrous behavior including throwing a pool ball at her sisters nose, pysch ward, antidepressants, running up credit cards, accusing someone of rape( and we made SURE that she was or wasnt, esp me - seeing as I have been raped), the list goes on and on.
There is a book, called building better babies. Its about how you can make super intelligent , healthy babies. It also get syou to thinking how bad most people eat, and what they do on a daily basis to their body's - isnt so hot for children.
It is such a big big thing not to smoke or drink or take drugs , to have proper nutrition.
Im sure you did your very best.