I agree. GOD did not make a mistake! A very basic explanation of biology might be in order here (with my son, it was as simple as saying that mommies and daddies are allowed to show their love for each other in certain ways that can cause a baby to grow and that these ways should be saved for when they are married.) Follow up with an explanation that, since the fall of Adam, people have a hard time doing what’s right (especially if they haven’t been taught correctly) but that God allows us to choose to do right or wrong.
Emphasis should be placed on the fact that, though the couple committed a sin in conceiving a child out of wedlock, the CHILD is not a sin or a mistake. If anything, that child is proof that God can bring good out of bad situations. And encourage your child to PRAY for the couple and the baby, that they may learn to live the way God wants them to live!
My sister threw this situation at me which really created a lot of questions for my son (who is adopted–his birth parents were a couple of unmarried teenagers.) I’m sure we’ll still be working out all the answers for a long time to come!
Above all, ask the Holy Spirit to give you the words!
God bless you and I’ll be praying!
BlueRose