I, too, was given up for adoption at birth. My birth mother was 16 at the time and was placed in a home for unwed mothers until I was born. My parents (adopted parents) were very open about the fact that I was adopted, but they didn't know where my birth parents were. 

Once my wife and I decided to have kids, I thought that I should find out about my family history and find my birth parents. I quickly found my birth mother, who had moved to Nova Scotia, and had a family. I've happily inherited a half-brother and sister and a step father as well. 

Strangely, my birth father, who lives also in Toronto, not far from where I grew up, wants nothing to do with me. I don't think he told his family his 'secret'. His loss.

I'm 51 years old and I can totally feel the writers pain. Things were VERY different back then. I can only hope her child turned out happy and understands why she did what she did. 

I wish you and your 'child' all the best, Heidi. I do hope you find each other.