Nothing justifies separating a child from her parents, especially a mother. Period. No one died and made X, Y or Z God to decide who will prove to be a good or bad mother or father.
And I really don't understand how a father who thinks his child is safe with her mother, living a happy cherished life, and a mother who tragically thinks her child is dead are supposed to look after and protect the said child for 8 years.
Anyway, that's enough discussion on probabilities off a TC article for me. And even if this twist ended up being true, this one is pretty much a no brainer.