Hi there,
I was planning to reply, but Notwendy wrote what I was thinking.
Just because your wife says things, it doesn't mean she'll actually follow through. She might make threats and act passive-aggressively in the moment, to blow off steam and unleash some of her pent-up stress and frustration. I'd say, if you want to avoid conflict, what you could do is gray rock. That's shorthand for not reacting to your wife's threats, but instead staying as calm and boring as a gray rock. She leaves the family online chat? Fine. She needs a time out anyway! She might believe she's "punishing" you with her absence, and fantisizing about "hurting" you "in public" with a farewell post, but my guess is that she can't stand to see cheerful family exchanges amongst your relatives, as it makes her feel alienated (from familial bliss) and insanely jealous. In fact, my guess is if you have an adverse reaction to her threats, you'll "reward" her threats with extra attention, and she'll commence a nuclear arms race with progressively more dire threats. You see, if she's really MAD, she will threaten mutually assured destruction. So my first instinct would be to try to avoid getting "sucked into" a nuclear war, at least at first. How? By remaining calm, and not displaying your arsenal of weapons.
Anyway, if you are planning separation or divorce, you need to get your own counsel, but I'd keep your plans absolutely confidential until you're ready. I guess I wouldn't recommend mediation, because pwBPD are not known for being reasonable and negotiating in good faith.
I also agree with Notwendy regarding the kids, which are probably tweens or teens if you've been married for two decades. If you want to eat with them, then you could make them a snack, arrange a pizza-and-movie night, take them out for frozen yogurt after their basketball game or arrange a mini-picnic in the park with sub sandwiches, whatever--just don't purposely "sabotage" what Mom does. Mom could participate or not, her choice. My guess is she won't, and you could frame it as giving her a needed break. My sense is that your kids would relish some one-on-one time with Dad anyway. Something as simple as a mug of hot cocoa with extra marshmallows could be nice.


