I’m so sorry, IfNotForYou.

I know only too well how draining these episodes can be.
I, too, struggle with how to react (or not react) and how not to get triggered.
My H knows my hot buttons and he’ll say things much like your wife: he bought the house, my car, I haven’t contributed at all. Even after two years of learning, I still find myself engaging in these debates. I should know better. It’s frustrating. When H us like this, there’s no use trying to reason with him. Truth has no place.
The silent treatment is a form of abuse and a control tactic. It’s not one I’ve had to deal with as my H has the opposite problem in refusing to stop talking. But I know from reading around here just how important self-care is. It sounds like you’re doing a pretty good job of doing your own thing. Are these activities you enjoy? That “fill your cup”? Do you have a therapist? I and many others find that so valuable.
Anyway, one thing I’ve worked in that is slowly but surely helping is to make plans. I think through scenarios in my head. By now, I know the kinds of things he’ll do and say. How will I react? What will I do. It’s hard to stick to that when emotions are high in the moment, but so much easier than trying to figure it out in a dysregulation.
All that to say: you’re not alone. Be kind to yourself. You’re learning and working on it and that’s exactly what you should be doing. Keep posting here. We’re listening and we’re on this journey with you.