Hmmm. Humiliating people doesn't come from a sense of justice, it comes from a sense of revenge, and those two things aren't the same. This is kind of disgusting.
I'd make her sit with people who have lost children to people like her, and have them explain what happened. People commit crimes when they think they'll get away with it, and can abstract away the consequences, and pretend that no harm is being done. She's been caught, which is the first part, and as to the second part, it's harder to rationalise and justify callous idiocy when you're sat across from someone who has been harmed by actions like yours.
You know, unless you're an actual psychopath. Then nothing will help and you just need to be locked away.