You have small children I noticed. What does she say about them?
To her, it does not matter what affect this will have on the kids. She is being selfish and narcissistic. She is acting in her own self-interest, everybody else be damned.
She has told me, "they'll survive." Bottom line: She is telling herself (and me) that a divorce will have very little impact on the kids. She does not really believe this, but it is what she is saying. The oldest suspects an affair (he overheard us talking), so a divorce now will only confirm his suspicions (esp. if they become a "couple" immediately after D), and the middle kid will be emotionally DEVASTATED. And she knows all of this. But it does not matter because she is "in love."