My mother was VI’ed as my dual (she being SLI and my being IEE), but I can’t say for sure if this is true. It is true that she has better Si, is more caretaking and more...disciplined, for lack of a better word, in the career sense than say my EIE father (he was a musician) and myself, but I‘m not sure quite sure if I see my mom as Fe vulnerable...maybe. Regardless, it does make sense that we may belong to the same quadra and overall have good relations. In certain ways my EIE father and I have more of an understanding in terms of certain views on life/lifestyle, maybe both being NF (I still consider this possibility for mom however, though her Si seems quite strong), but it’s easier to be around my mom for longer periods, I have lived with her more harmoniously, etc.