Hi Bubs, I'm sorry you're going through a hard time with your INFJ lady.
I'm an INFJ myself and am at the early stages of a relationship with an INTJ. We have already gone through an immense amount of ups and downs since the beginning. He used to become reclusive and broke up with me 3-4 times within this first half year. Saying things he didn't mean, pushing me away and being so harsh to me come to find out he was only afraid of getitng close if I wouldn't take the bond as strongly as he does.
Well anyway, above I'm just trying to give you an idea that I have a bit of experience with the INTJ-INFJ relationship.
In this thread above you posted, you stated that:
pretty much content to stay in the background most of the time anyway
And I don't blame you. As an INFJ, I thought it would be logical to understand such a reclusive nature of the INTJ. However, a relationship is between two people. Don't get me wrong, I'm sure you're aware... And I'm sure she deeply values that rule.. but, us INFJs do have a tendency to dream a little father than we intend and get a little disappointed when we see our visions play out practically, and right in front of us.
If like you said, you had been content to stay in the background majority of the time because of her "take charge" nature, I can understand that; however, perhaps for a long time, she was reluctant to be honest /herself/ that it had been bothering her.
Personally, I am more of the "take charge" type myself but I also encourage freedom and one's ability to do something them self.
If I feel my INTJ has been in the background a little too much, then I would /take charge/, sit down with him and let him know that things are beginning to feel off balance.
Your INFJ shouldn't have been reacting to you so emotionally that way without even clarifying her own emotions and thoughts to you as if expecting YOU to figure it out.... that is just cruel.
But, I think the best thing you can do is sit down with her when there is little to no tension, look her in her face and eyes and say something along the lines of this: "I think that we have been failing to communicate for quite a few years. I can tell that you are deeply hurt. But, (and this is very important), /I am hurt too/. I figured all this time that you were comfortable with the way things had been, so I didn't want to change or rearrange your routine and patterns, I was content as long as you were. I had no idea that you had much more going through your head. But if you were never to tell me years ago and even closer to the beginning that you wanted us both to be the bosses, how could I know? I want to know. I want to be apart of you just like we initially intended. Can we work together as a team from now on?"
You being an INTJ using Te and Fi tertiary, you generally have good control over your emotions and understand yourself well. INFJ with Fe and Ti will not, because she notices you have your mind in so many places that your emotions don't show as easily as she would like, and it throws her Fe balance all off.
But keep in mind, you're not the only one at fault, she isn't perfect, neither are you. But again, a relationship takes TWO.
I hope this helps.