Any parent would be devastated. I don't think any parent would pick up a knife, march around and stab someone.
Her kids have not only gone through abuse but lost their mum to prison for seven years, how is that in their best interests?
What if she'd got the wrong man?
What other criminal offences should give people carte blanche to kill the perpetrators?
Due process and the rule of law is the hallmark of civilisation, anyone would sympathise with this woman's distress but it's right she was punished for killing someone, even if he was a paedophile.