I can relate to the anger that you are feeling. You really would love to strangle her or break somethin in two if it got in your way. This anger is very normal and you will have cycles of this every so often. The best way to relieve yourself of that anger is to go to the gym and punch that old bag, take up jogging and jog till you can't jog any longer, go out in a field and scream till you can't any longer or find an old piece of wood and take a hammer to it...but whatever you do, do not turn that anger on your wife or anyone else.
Gordie, she really doesn't understand why you don't want to have sex w/her. She's in the mental age of 15/16 and kids switch off on partners and they just think it's "sex" and not "doing it out of love". Her empathy chip is still cracked and I know she's driving you nuts mentioning this topic over and over to you.
I do agree...you need some time away from her and the situation. Can you arrange to stay w/a friend for a day or two? YOU need some time, space and peace in order to help you rebuild your patience and strength.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.