She would rather chase after her affair partner than save her marriage.
You don’t get to have your cake and eat it too when it comes to affairs. If you have an affair, you don’t get to go back to your normal life as if nothing happened, and maintain a close friendship with your affair partner. You either have to choose your life partner or your affair partner, even if you feel like you don’t have to. The whole reason people have affairs is that they want to see someone new without losing the security of the person they’ve been with for years. It’s no wonder people who cheat want to have it all, even after their misdeeds are found out.
Cheating is always going to get found out eventually, because you can only live a life of lies and deception for so long. Nobody has ever had a secret family that was not eventually discovered by the other family, even if it is posthumously. If you want to put in the very hard work of trying to rebuild your relationship after infidelity takes place, you’re going to need to change a whole heck of a lot about your day-to-day life. If you’ve been cheating on someone in your rec basketball league, you might need to quit playing basketball in order to save your marriage. If you’re not willing to quit basketball to save your marriage, then your marriage was probably never worth saving to begin with.