It's worth the time to tell her how much she is hurting her children. If she can't see it herself she is lost. Nothing you say will change that and just create yet another reason for her to justify what she is doing in her mind. It feels like an controlling, manipulative action. Don't do it.
As for all the other things you need to work out a separation agreement with your lawyer, as has been suggested already. What is your hesitation to doing this already???
Me:49 W:45 M:19 T:22 EA confirmed and ended 8/2014 S:19,17 D:9,5