I read about this too. Two things came to mind.
First, as huge as the amount is, capital punishment seems pretty extreme. I can't help but wonder, if you kept her and her co-conspirators alive, wouldn't there be some way to make them work in compensating the victims, and making restitution? Not only for the victims, but to society? I'm not suggesting freedom. They all need to be locked up. For a very, very, very long time. But if they are clever enough to commit this crime, they should be clever enough to right the wrong.
That leads me to the second thing that I noticed. There is no mention in the article about the whereabouts of the $12.5 billion, and if the thousands of victims will be getting any of their money back.