Under a fair system of justice, kidnapping wouldn't result in the death penalty, but wow she's foolish to think that she and the child wouldn't end up dead after being kidnapped. (I mean really, who would expect kidnappers to do better than a fair system of justice?)
Being a 15 year old can excuse some things, but kidnapping someone goes way beyond any of that.
And in spite of Leila's delusions, Hannah wasn't even blackmailed. She was pressed, but she had other entirely viable options.
Now, as for these random wanderers. They are giving up waaay too easily on returning this girl. Seriously, just send someone to listen for news, find out who she is (they even have a name), and then drop her off in the middle of the night and vanish if they're worried about being mistaken. We already know there's a huge stretch of unguarded border they can cross.