Somehow I missed this conversation, but I wanted to comment.
Having adopted a child with attachment disorder, finding no answers, having other children in the family to protect, I had to make a choice to give her up.
I had kept in contact with her birth mom, so when she said she wanted to take her and try, that is what we did. She will be 18 in March and while she still has issues, she's doing ok. She will never be as attached as other kids, and she is still a me first personality, or "me instead" personality, but her mom has kept it up now for quite some time, and she's getting decent grades, and seems to know right from wrong.
I couldn't do it, I don't have it in me to do it. Not everyone is cut out for that type of parenting.