I am with SK, most b-mom's from that era were basically told to "forget." From what I have learned though - they never forget. You know, I know with my b-mom it was really hard for her. She was sent away across town when she was 6 1/2 mos. pregnant with me, to live with her aunt. She had me, and five days later returned home with her parents and siblings, and had to pretend she had just been away, that nothing happened, even though she had gained a lot of weight. Imagine going to the hospital, having a baby, and coming home with empty arms. These b-mom's grieve for us, like someone does with a death. It truly is like a death in their hearts. Give your b-mom the benefit of the doubt, just b/c she hasn't contacted you, doesn't mean she hasn't tried to contact you and run into false leads, etc.
Hang in there. I am sure she thought of you often, and still holds you in her heart. I pray you find her and have a happy reunion. Let me add that I am reunited with members of my b-mom, Liz's family. Unfortunately Liz passed away from injuries received in a car accident in 1977. She was just 20 years old. So, for me, it was like finding her and losing her in the same day. If you would like to, you can read my story in the adoption.com emagazine issue dated June 17, 2003 entitled "He Did This for Us." Here's the link:
He Did This for Us - new article by Nikki Lever
Once I got married, I wrote the DEFACS in Atlanta, Georgia, and got a copy of my non-identifying medical records. It gave me enough information to know that my birth mom was 16 when I was born, her mom owned a daycare, her dad was a carpenter, she had 2 sisters and one brother. It told me that her eyes were brown, her hair was brown, she stood 5'7. Much like myself. At that time, my husband said to me "Nikki, we can find these people." From reviewing the non-identifying information, I learned my conception wasn't a consented one, so I figured it was a bad situation, and I also figured my birth mom had moved on, etc
http://www.adoptionweek.com/article.php?articleid=283
With love & prayers - NikkiLGA