OK...not that I want to give her any ideas, nor am I a psychopath. LOL!
But, if I were her what would give ME the most satisfaction and "revenge" at this point would be to say "Yeah...I did it! I did it, I liked it! I stabbed him here and watched as his eyes...blah, blah, blah".
That would hurt his family terribly, and it would give HER the most personal satisfaction out of this whole thing I would think.
I mean, she HAS to know it's over at this point. Why not just put it all out there. Be the spiteful woman you truly are, go down with a fight at least.
If you are going to do it, at least own it for God's sakes! But maybe that's just my rational brain thinking? hahaha!!!