Oh yeah, did you know you can choose for your child when they grow up, to NEVER find you? Do you think a brainwashed person would agree to that? Surely a brainwashed person (meaning someone who was in a state of vulnerability, but only for a short time) could opt to have their precious child find them later in life! I mean all they'd have to do is go back to the agency and give them their information. That's what 98% of these women did, right?
The birthmother cannot just go and give info for the child to find her. It's not like that, at least it never used to be. Things may slowly be changing however.