Thinking about Young Adult (YA) literature of even ten years later (Blossom Elfman's The Girls of Huntington House, 1972) I would imagine she'd have been sent to a home for unwed mothers. I'm trying to think about how the culture of that time was, and this would seem to be very likely.
Absolutely. Unless she took off and went to Kenya -- the idea that started this whole thread. But, if you go to this link A chronological life story of Barack Obama this web author makes a powerful argument that Frank Marshall Davis is the real father and that the Dunhams slipped cash to Barack Obama to take the heat for the pregnancy. We know that BO was always in need of $$$ and we also know that FMD was a friend of Stanley Dunham -- in fact he frequented the Communist Party HQ which was very near the furniture store where Papa Dunham worked. Davis and Dunham were drinking buddies. It isn't a far reach to imagine that Davis would have been one of the first people that Papa Dunham introduced to his wife and daughter when they arrive on the island since they wouldn't know very many people at that time.
It appears that Papa Dunham went to Hawaii ahead of the women, as they were waiting for Ann to graduate from Mercer High. Being alone in Hawaii would mean that Dunham had a lot of time on his hands to seek out the characters that he always sought. His curiosity might well have led him to the Communist Party HQs where he encountered poet Davis.
Ann, who had never had a boyfriend, but who was intrigued by counter cultural ideas, would have been fascinated by FMD. FMD was married at the time and wrote a pornographic book under a pseudonym which told the tale of seducing and sexually educating -- with his wife -- an innocent under aged girl named Ann! In fact awakening her to the point that she ASKED to be secuded. And then he goes to great lengths describing all of the techniques they taught her and congratulates himself on giving her a great sexual education that would benefit her the rest of her life.
Does this scenario sound familiar? Of course, FMD hides the identity by writing under an assumed name, by claiming that this was a work of "fiction", that the girl was "13", and that her name was "Anne".
Draw me a map!
FMD had already served time for rape. He was being watched closely by the FBI. He'd go to jail if he were exposed as the impregnator of a 17 year old, unmarried girl. In fact, that was the common slang for a girl like Stanley Ann in those years -- jail bait. It's not a far stretch to think of Stanley Dunham trying to help his buddy out by providing a cover. And then later promoting a friendship between his grandson and his drinking buddy -- father figure, or true father?
Well, I don't know if I believe all that, but it makes sense on one level.