Is this girl an EIE? *description only*

[FDG]

It might have been clear to you if you were used to thinking about people in terms of socio- / Jungian types. It wouldn't necessarily be obvious to everyone.

Of course. How does this tie into the conflict between our opinions?

[nefnaf]

Of course. How does this tie into the conflict between our opinions?

I don't really see how our opinions conflict. You said that you knew an ESI who had psychological issues and behaved in some ways similar to what OP describes. I'm saying that this girl is an example of the same phenomenon. IJs can be very neurotic and have low emotional stability but they are still IJs.