The other explanation here is that your W is truly delusional and has lost touch with reality. If you feel that's a possibility and you're concerned about the kids, you might want to start keeping a detailed journal of the irrational things she says and does.
If everything unfolds in the worst way and you have mental health issues to face, you'll appreciate having documentation later.
I hope this is not the case and my prior explanation is the correct one.
Accuray
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015