Thank you so much for your comments Sandi! I'm also very torn on the co-parenting thing, and you voiced my concerns. The kids are settling in pretty well, and for what it's worth, W and I have been pretty good about keeping schedules, and being very fair. Kids love W, and I don't want to keep them away.
She is truly doing some regrettable things, but so far it is the just the D, EA, etc, that are hurting them by proxy - and she has completely insulated herself from the truth of those hurts.
Anyway, she went to a counselor like 5 times - and pronounced herself healed.
I have switched from going dark to detaching, and I have just detached about 5 days ago, so the hard times are a'comin! I'm steeling myself for them, but am committed completely. I'm already starting to see W getting disgruntled the couple of times I've stood up to her, so, we'll see!