Book Of Likes Faces

We were told by my wife's aunt last month that her mother had a child she gave up for adoption, probably in Chicago in May of 1958. Her name was Barbara Green b.August 24, 1945. Sad to say that she died in a car accident in Colorado where she was from in 1981. My wife's aunt also told her that she thought the baby girl was named Billie Jo. Also, the name Groves or Hundley may have been involved. We have no idea who the father may have been. Barbara met my husbands father about 4 months later married him in 1963. Beth has one brother and is very receptive to knowing her sister. Beth has DNA on 23 and Me and Ancestry but has had no close relatives she can't account for. Any help would be appreciated.