Can’t really say without knowing more, but as horrible as this is, I wonder if this outcome is better than the alternatives. The child would probably have had a deadbeat dad. It doesn’t sound like she would have been able to rely on much support from her parents. Plus, if not for the pregnancy, the girl might have ended up marrying that asshole, and been saddled with in-laws who have no respect for her.
It’s still a tragic situation, but at least now she’s wiser, and hopefully has a better chance at a decent life.