I haven't seen any picture of the supposed pregnant woman, but in the Ohio case she was fat (excuse me, "large") and her husband believed her when she said she was pregnant.
http://archives.cnn.com/2000/US/10/05/pregnantwoman.killing.ap/
In fact, a number of fat women have supposedly given birth who didn't even know they were pregnant. I find that hard to believe unless you are a bit slow.
I suppose. (Thanks for the link) I had not thought of that. Still...??
Do a search on FR or Yahoo--there is a picture posted. She doesn't really look that overweight that a pregnancy wouldn't be noticed.