Fareast mentioned that you do not know what you want when he said, "right now your head is swimming, and you are trying to hold it together."
That is very true at this stage of your discovery. Your thoughts are all over the place and will be for a few weeks. Eventually your anger about the injustice which she has heaped on your head will take over and your thoughts will become clearer on what you want.
In the meantime, you could be making a list. My wife is big on lists. She is extremely detailed oriented, and you appear to be that way also. My wife has lists all over the house and she is always reviewing and revising them.
One thing I have learned is that I might get one thing I want… maybe even two… but I will never get everything I want. The probabilities of getting everything go down exponentially with each added want.
As you make this list first start with what is known as a base fact or situation in which to add the wants.
… My wife cheated. (that is the known base fact for the list).
Now start adding your wants or things you want to happen on to that known factor. You might even add your own estimation of the probability of getting "everything" on the list. Just keep in mind that each time you add another want or wish the probabilities of getting "everything" keeps going down.
The list might then look something like this:
… My wife cheated.
… My wife cheated… she is staying with me.
… My wife cheated… she is staying with me… she is remorseful for the pain she has caused me.
… My wife cheated… she is staying with me… she is remorseful for the pain she has caused me… she is now completely honest with me.
… My wife cheated… she is staying with me… she is remorseful for the pain she has caused me… she is now completely honest with me… she will never cheat on me again.
… My wife cheated… she is staying with me… she is remorseful for the pain she has caused me… she is now completely honest with me… she will never cheat on me again… I will get over it and completely heal all this pain.
… My wife cheated… she is staying with me… she is remorseful for the pain she has caused me… she is now completely honest with me… she will never cheat on me again… I will get over it and completely heal all this pain… she goes out of her way to make me happy.
… Etc., etc.
Only you can make your list as only you know your personality and the personality of your wife. We internet strangers can only make suggestions. This list is one that you should spend a lot of time with because it can help point you in the direction of your future. I would suggest that you take out this list every few days and ponder it… either adding to it or removing some wants or wishes from it. If it were me, I would take at least a month, probably longer, to compose it.
As you can see when you make a list like this, with each added want or wish the probability goes down dramatically until you get to practically zero. That is when you need to decide what you can or cannot live with.
For instance, take the first want… she is staying with me. I have seen several studies, and the statistics vary greatly on this subject, but many show that there is a 75% chance or greater that partners will stay together after infidelity occurs in a marriage. Many reasons for that including children and finances. Many times, it is not economically possible to split one household into two households. Each marriage has its own personal reasons to remain together.
So, you might assign your own percentage that your wife will remain with you after she is confronted with indisputable evidence of her cheating. You know her better than anyone else, so knowing her you might assign a 75% or greater chance she will remain with you.
The next added want or wish on the list is "she is remorseful for the pain she has caused me". As we all know, remorse is quite different than regret. As you read through the Reconciliation forum you can begin to see that difference. Remorse involves having total empathy for what you are going through. It is quite different than her saying "I don’t know what you want me to do with that?".
It is my personal opinion that most cheaters are incapable of becoming remorseful unless they make major changes in their lives. It was selfishness that caused a cheater to cheat in the first place. Most regret getting caught, but that regret is all about them... not you. For someone to become remorseful and contrite, they have to not only see your pain, but empathize with that pain. A selfish person just cannot do that because it is no longer about them, but about someone else whom they deeply hurt.
You know your wife better than we strangers. Ask yourself some questions about her, such as, does she take ownership of her actions, or does she blame others? Right now, she is acting in her own best interests and has no regard for you. If she had any regard or concern for you, she would have stopped this affair, or better still, she would have never begun her cheating ways. Over the 25 years you two have been together has she always been this way? Has she always been this selfish, or is this a recent development? If it is a recent development, it might be easier for her to become remorseful. If she has been selfish most of her life, then she might be incapable of becoming remorseful. That is entirely up to her.
As you add to the list you will see that your chances of getting it all go down as the list increases. The odds are better at getting one wish than two... getting two wishes is better than getting all three... etc.
Please don’t do this in haste. Take all the time you need. Read it often and make changes when they occur to you.
I hope there is something here you can use.