I have been in your position. In fact it has come up recently with my spouse and his infidelity. He does not see how I can ever forgive him. This is what I told him.
"I may not be at the point of complete forgiveness but this is something that I have to do myself for myself. I made a commitment to keep my marriage together and work things out. This means that I can not dwell on the past. I don't ignore what was done by any means but I can not throw this in your face. It gains nothing but pain on both of our parts, and neither of us can heal."
Please take what I said to him to heart. Bringing up this pain that happened before your marriage will gain you nothing. Go see a counselor and deal with this issue inside yourself. I can not stress this enough. You have to be able to give forgiveness. She has dealt with her repentance with the lord. If he has forgiven her you must too.
Move forward in your marriage and try not to look back. Forgive yourself for your angry thoughts. Understand that sometimes those thoughts will creep up on you. But that means you must recognize that those thoughts are hitting you because the advisary is working on you knowing that this is a weakness for you. You have to stop those thoughts and mean feelings in their tracks when they happen. Stop and say a quick prayer for calmness. I did this so many times for a long time and it worked every single time to calm me down. In time I started to get angry at the advisary for working on me all the time and those feelings and thoughts slowed down considerably. They are still there at times when I am insecure but I now recognize them and stop them before they blow up at me.
No one is perfect. Not me, not you, not your wife. Only the savior. Let the past be the past and forgive her for yourself. You can tell how anger and pain has festered in you. It is apparent that you do not like it. You can control this if you really want to but you have to take steps to do that. Those books previously mentioned are very good. Counseling will help.