Are you also married to my wife Omega1?

Seriously though, I have dealt with the "tea issue" as well. Walking out might actually have been the best thing. You didn't want to escalate by JADEing, and saying something might have just rewarded her bad behavior by giving it attention, even if it is negative attention. If you feel you have to say something, maybe something like, in a firm but friendly tone, " I understand the tea tastes gross, and I'm happy to make you a new cup. That harsh tone makes me feel bad though, so please try to speak to me more nicely." Just leave it at that as you smilingly poor the tea. If she calls you oversensitive after that, you can reply that your feelings are what they are, rightly or wrongly. Make it about you, not her. If you can control your response and not fight back emotionally because you are empowered by knowledge and making a conscious choice, instead of reacting from fear and bullying, then you are not a doormat. You are being the grown up in the room and can take some pride in that.
I just heard the expression "Let the Wookie win" for the first time recently. My understanding of the premise is that if the other person is emotionally invested in a minor thing, and you really are not, let them have their way. I guess the idea is controversial because some people feel it enables bullying, but I think the approach is worth thinking about on a case by case basis.