Wow now this doesnt sound like a women killed Karen at all but it does sound like a women got the "ultimate revenge" by what happened.I am begging you. Don't let your hatred dictate the rest of your life. You may feel as though you have gotten the ultimate revenge but this will hang over your head for the rest of your life. And still nothing will change. He has cheated on you for years and will continue doing so because you allow him to do so. Every time you go back, you are accepting his infidelities. Leave him and get on with your life. Forgive those who have done you wrong and be free to live your life. She can't hurt you anymore so please let it go and do the right thing for those children. What happened is wrong but you can make changes. You hold the key, please unlock your freedom and do what is right. Don't let him get off because you want revenge. It is over now and you can move on if you will. Please do what is right.
If this is true I guess my question would be was the satisifaction of the revenge really worth it even in her death? Is it worth it when you lay your head down at night with a killer???