Sold her for free? If she sold her then she wouldn't have been stealing money from Amy. Plus, how do you get an infant out of the country without some sort of id or letter from noncustodial parent. this is hooey.
I think way back in the early weeks of this case there was a thread or part of one about whether you needed ID to fly a child out of the country. Some said yes, some said no- it depended on the airline.
My kids aren't infants, but the last time I took them to visit my sister I didn't need to prove they were mine.