One should never speak ill of bio-parents as it is a direct reflection of the
bio-kid. The kids know who their biological parents are, and ranting about them
in such ill manner will give the kids the impression that they're no good either.
Although my daughter doesn't know her biological parents (neither do I), but
I do know about their life and what happened to them. So far, I have never
said a negative word about them and when Jane is older and can understand
the situation much better, I hope she will not judge her bio-parents nor see a
reflection to herself. Let's face it, there is a reason why we adopted our children
and why bio-parents are unfit to parent, but we have to make sure that our
kids don't feel inferior because of the life their bio-parents chose to live.
On the contrary, we have to über-compensate in that regard.