I’m not sure where you picked up the white girl/black girl thing. If you read my post carefully, I am suggesting the plausability that Stanley Ann did not want her “half-brother” to be put up for adoption but instead accept the challenge to raise the boy as her own..until it became an inconvenience at which time she gave the boy back to the real father, Stanley Dunham, to raise. To me, that makes as much sense as the baby story put forth by Barry and his handlers.
How would a white teenage girl even know about a black hooker being pregnant in 1960?