Courage in Rwanda was rare. And usually didn’t end well.
Well, I don’t know the story. But I suspect that a bunch of thugs came to the nunnery and similar places, surrounded it, and simply took everyone away. In other words, not much the nuns could do. Too late to hide anyone.
That’s just speculation, but it’s awfully easy for someone sitting in a comfortable civilized armchair to criticize people who are suddenly confronted with this sort of barbarity.
I guess the nun could have volunteered to die with the girls, but that wouldn’t have done them much good.
And of course it’s always possible that there were a few bad apples who really did betray their charges, who otherwise would have escaped. But I doubt it was common.