That really sucks, and we'll never find out what happened. I wonder.. maybe she sold him? Or maybe she killed him? Some women get really fucked up hardcore about their babies and they get depressed and do things like that. They were getting a divorce, maybe she got freaked out by losing his kid so she killed him, or she sent it away to some family member outside of the country (thats more likely what happened)
It's a shame that she killed herself after the cnn special was aired. I'll be on the lookout for updates..