It is strange isn't it, this movement of roles in the family. My sister was most definitely the scapegoat as she grew into her teens, reacting I suppose to my brother being the GC/hero. I so so agree about the burden of the golden child. I think it's a terrible burden for my brother, he lives a mile away from mother (I live 250 miles PHEW!) and she is on his mind almost all the time. She maintains this faux air of independence but is always at him to pander to her really. That sounds harsh, I think he really loves and cares for her.
While my sis was the scapegoat I was busy being the good girl, and a bit Lost child too. Then somehow(Isuspect when I went to uni and didn't come back after graduating), that shifted and I was the scapegoat evermore.
The comment made here about the Narc projecting are really helpful too-of course. My mother wasn't interested in me having independent thought, all I was was a projection of her, and she didn't like it when I did move away out of her control. I wonder if that's also why she seems to have been most hard on me? -because I moved away from her control physically, and the other two didn't?
One very telling thing that my mother has said since I had children is how she hated us all going to school. As my little boy got nearer and nearer too it, she would constantly be the prophet of doom. When I said how we were all excited for him etc, she would just say "school is awful, that's when your children start growing away from you, coming under outside influences. You will hate it, I hated it" !!
Very telling I think!