What on earth was that woman thinking?

I've been reading about this adoption scandal in Tennessee. You've probably seen it, it's the story of the woman that adopted a 7-year-old Russian boy and then, six months later, stuck him on a plane and returned him to Russia, claiming he was a violent psychopath. The whole affair has led to international shock and outrage.
To be honest, I don't blame the Russians for being pissed.
What kind of person just dumps a little boy on an international flight, alone, and has a complete stranger, someone you paid, to meet him at the other end and drop the kid off at a government building with a note explaining why???
This woman is supposed to be a nurse. Aren't nurses supposed to be compassionate people? If she was genuinely concerned about her family's safety with this child, she should have taken him to a psychologist and had him examined. She did consult with a psychologist, but she never took the kid in to see him. She just dumped him.
What the hell? Why didn't she get the adoption agency involved? Or go to the Russian embassy in Washington and speak with someone there about returning the child to the state through proper channels?
The Tennessee authorities are looking into the matter, trying to determine if the woman broke any laws. Apparently, a lot of it depends on whether or not the child was a U.S. citizen.
Personally, I think, at the very least, local child services should evaluate whether or not this woman is a fit parent. She apparently adopted another child from a foreign country. It might be interesting to find out what his situation is like.
The whole situation is just sad.