CNN
Montgomery "told us all she was pregnant with twins, and about a month and a half ago her messages were 'I lost one of the twins. It's so terrible, but they saved one twin,"' Strudl said. "We didn't believe she was pregnant. I don't know how she fooled her family and community."
So.. from what I gather from this story is:
The girl who kidnapped the child, has been lying to her friends and family that she was pregnant. So rather than come clean about not being pregnent, she kills this other woman, and steals her child.
And this womans husband, beleived that she was pregnent.

I don't understand...
There was one thing I did see on TLC a very long time ago, on Truama, life in the ER. A woman came in complaining of her stomach hurthing, and what not. She ended up giving birth on the gurny... she didn't even know she was pregnent.. WTF?!?!
Sometimes the stupidity of people really amazes me.