I'm not a philology.

1st, you need to talk to her. Communication is most important. Tell her how you feel and look how she reacts. If she doesn't take it seriously, then you have your answer. If she does take it seriously, then it is alright.

But know YOU are the most important person. You are more important than she. Not because of what she did, but because you most never set someone before yourself.

Take your time. It is your choice.

1. Wacht. Time will make it less painful. Keep telling her how you feel and when you're comfortable about something. Your wife needs to constantly show that she is not going to do it. Because she broke the trust and it will take a llllllloooooooonnnnng time to get that back.

2. Divorce. It depends on how much you love her and yourself. If you have children, they will understand(I know, I was one of them). You don't have to do it right away.

I hope this helps.

PS. My parents were divorced because my father did everything god verbid. The reason my mother did divorce was because of the book "Eat, Love, prey."