type my sister

Mmm, she seems PiTe (most likely SiTe). Quite dismissive, eyes most prevalent aspect of the face, P-lead swaying, viscosity.

Sevenfish, just to second his analysis. Yes, NiTe... Very fixed eyes. No Si/Ne visual cues whatsoever!

She physically looks a lot like my NiTe grandma. 0.0

And this woman (who I believed to be SiTe but I now see as NiTe):

Absolutely

First off, she's two years older than me. She has some learning disabilities - slow processing I think as well as difficulty processing reading. She's always had difficulty in school and not picked up academic subjects very quickly - not your typical "INTJ". When we were little she hated me and we fought constantly - it was like war xD. She always said that I was a show-off and hogging all the attention. 

She's done ballet since she was very little at a prestigious school until she got a hip injury and couldn't go pro. I never stuck to anthing that long and kind of rolled my eyes at her. I used to think of her as simple minded and not interested in anything. I think she is a late bloomer which was exact opposite of me (intellectually that is - maturity-wise she wasn't far behind). She always came to me for advice, she still does sometimes. She also talks to my mom all the time - I am very independant and so I saw this as a weakness for her. She texts all the time and has been in several relationships - I've been in none and rarely text. It's always seemed to me that she doesn't understand the effect she has on people, so I've been the one to tell her.
 
Last night when we were talking she said "I feel like I learn everything the hard way", and she pretty much does seem to feel life out for herself. I, on the other hand, do tons of research about anything to prepare myself and give myself the upper hand. I realized during that conversation that she is actually a lot deeper than I gave her credit for - I was talking about some philisophicalish things and instead of tuning out like most the people in my family do - she listened. I kind of stopped because I assumed I was boring her and she's like "keep talking". She defies the NiTe stereotypes in terms of the scientist or whatever - but she definitely has some deep intelligence (she also has recently discovered an interest in reading and deep topics) that I always overlooked and wrote off as shallow. Her Fi totally conflicted with my Fe and Ti - I saw her as totally selfish and self-absorbed. She holds me in high regard, I think, especially in regards to my intelligence. She has this cool calm about her that is foreign to me. At the same time she has this goofiness... One more thing! She is super organized and together with a very good work ethic, I am the opposite of that (although I can work hard - I'm not consistent like she is, Ne obsessiveness I guess )

Right, you said "brief" xP sorry about that haha

I thought "face-centric" was a signal for J-lead? Is that a typo?

Sevenfish Your sister reminds me of my Se/Ni brother, they both seem to have a dark "lost child" aura.