Btw, is there anything I should do at this point to reinforce the negativity of divorce? For example, should I send articles to her regarding the effects on children, etc.?
It would just come across as more controlling pressure.
She won't read them. If she does she won't believe them. She likely has friends who have told her "how resilient" kids are. Or, as my W figures, "what would I be showing the kids by staying in a bad M" - they think that D'ing and starting over is easier than addressing problems with self and with M. In fact, they may not even recognize that they have inner problems to address.
Now I have left a printed copy of MWD's article on "Forgiveness" and letting go of resentment, etc. on the corner of my desk in my office. Why? Because repeatedly, sentence after sentence, it describes my wife so accurately that if she read it, it might resonate, and in my mind, it is the single area most holding my W back from making any progress. So it sits there. If she snoops, she may read it; if she does, I'll know.
But asking her to read it would be like pouring gasoline on a fire. Unfortunately, she may have to experience the negativity to see it.