Look, folks, you feel sadness and shock and you didn't even know the girl.
These fellas did, and they haven't expressed an iota of remorse for having tortured, raped and brutally murdered her.
And they are adults.
Why give them the chance to 'reform'? That's an opportunity at a life Mary Ann will never have b/c they killed her.
Lock them up FOREVER. Bring in life w/o the possibility of parole sentences and make inmates WORK to earn their crust or at least contribute to their living expenses if they are physically and mentally capable of doing so, or put them in solitary confinement.
Nothing inhumane about keeping people who have shown they cannot live in society - b/c they rape, murder, abuse the vulnerable, etc. - away from the rest of us for good.