See God working through the child to soften the parents.
Our daughter-in-law became Catholic - from secular Jewish upbringing - because our son shared his faith. They were not engaged. I think the Lord is using her wonderful enthusiasm to reach her entire family - aunts and uncles, cousins, grandparents, parents/ not one of them is really involved in church. Grandparents, maybe, some bit. They’ll all be at the baby’s baptism, though, etc.
I agree. Their child is a blessing to them from our Father.