When she is not around, I don't see the same behavioral issues that we've been dealing with over the last 5 years. I genuinely believe she contributes a lot to the children's conflict.
So I'd like to think, her choice to leave will be better for my kids. Because I safely demonstrate empathy, compassion, and parent by example, and will be able to do without interference. I will be a safe place for them.
That's very possible. And maybe you will lead by example. When my kids tell my XW they consistently behave differently at my home than hers, she sometimes gets curious, and adopts my policies or behaviors.