it's still killing a baby--whether it's at 8 weeks or 28
weeks.
In this case, waiting until 28 weeks had the effect of killing the mother. I find it hard to believe that this girl's parents didn't know she was pregnant earlier than this. And was their relationship such that the girl wouldn't have told her parents she was raped? Or was she having consensual sex, and her parents had their heads in the sand about that?