Gosh I'm stupid why did that come out of my mouth.
Don't be too hard on yourself, b/c you immediately caught it. I'm sure it is quite a change to not offer help when you hear of her struggles. Old habits, you know.
I really admire what you were able to do with son's bio-dad. I have had somewhat similar experiences and it does scare us to death. We are really scared the child will get more attached to the bio-parent than to us. Of course, we worry about they will get hurt, etc.
I noticed you told him you knew he wanted to know who he is (and I know you mean his biological roots) but the kind of dad you have been, I bet he knows who he is in all the ways that count most.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!