Bingo, Karen. My xW only does rational or reasonable if it benefits herself. Otherwise, she thinks she stands more to gain by being belligerent.
And no, I won't hold my breath that she'll return kindness with kindness. I've been burned often enough already to know that her idea of compromise means she stands her ground and I do all of the compromising. Likewise, her idea of give-and-take is that I do all the giving while she does all the taking.