Well allatsea . . . I've always been one for "balance, fairness and justice" as well, and it is a wonderful thing for humans to strive for, and so admirable when realized . . . but life usually isn't like that.
You see, she really got the short end of things. You have a heart, with the ability to love, with a loyalty and depth of feeling she'll probably never understand, let alone be fortunate enough to actually feel herself. She'll never feel the wonder you feel as your children grow and discover new things, she'll never truly appreciate the concept of family. Worse, she'll feel the need to resent you, see evil in you, and treat you as poorly as she can so she won't have to look at herself. Yes, it's unfair, unbalanced, and unjust that her genetics, upbringing, and experiences led her to become the type of person who you and I and most decent people would never want to be.
As for being reasonable when co-parenting . . . do you remember my analogy about the venomous snake? Well, tell you what . . . let's walk back to that cage this tragic snake has put itself in. This time before you reach in, even though the snake has struck every other time you reached out to it . . . this time . . . explain to it in calm, gentle tones that this time you are reaching out because you wish to co-parent responsibly.
I'll bet the snake still strikes at you, probably even hurts you, just like every other time. Why? (Coarse language warning) . . . Because it can't fucking understand what the fuck you're saying! It's a fucking snake!! (End coarse language)
It doesn't matter that the analogous animal doesn't understand because it's incapable of understanding English, and that she doesn't understand because she's incapable of understanding reason (from you) and/or is stubborn and/or just doesn't get it . . . the result is the same. She's only sees a threat and will strike. There's a point where you have to stop trying. Maybe the snake will mellow out at some point . . . but don't reach out to it anymore expecting that.
How about communicating necessary school stuff to the Gru instead? Does that idea repulse you? Do you not want to communicate anything to him? Well, maybe that's how you need to feel about communicating with her. Each time you need to communicate something to her . . . think, "I'd better run this by the Gru first.". Whatever your reaction to that (repulsive) thought is . . . that's how you should feel about communicating it to her. If you are unwilling to run it by him, then perhaps you shouldn't run it by her either.
When you absolutely, positively, must communicate a parenting matter, try a third party, or use a long enough pole to avoid getting bitten by that strike you know you can pretty much always expect (if things are as you've described them).
By the way, when a venomous snake crawls out of its cage, rears its head and says in perfect English (or even American English), "Gee, I'm sorry for any inconvenience or fear I've provoked in you and other human beings over the years, it was part of my nature." . . . well . . . that'll probably be the same day your ex will apologize.
[This message edited by c24j at 5:13 AM, October 13th (Monday)]