Crap, what is wrong with revenge, it cleans the mind and soul.
So someone comes into your life and makes the decision to kill, or rape cause great pain and terror to a loved one.
What is the responsibility of family at this point. Your grandmother is in a nursing home and raped and battered by an employee, do you just sit back and let the law do it's thing ?
Say you have a 3 year old child found abused and killed, do you sit back and the law do it's thing ?
Retribution in no uncertain terms. As a bear mother and daughter, I believe in the Bible, harm my own and I will find a way to harm them.