My sister and I had been close our entire lives. I'm LGBT and came out of the closet about 8 years ago. I don't know why, but it really seemed to change my relationships with my family. None of my family is religious, but some are conservative non-religious.

My sister, however, is not conservative. She decided to go to school for psychology BS about 7 years ago. 6 years ago, I had a surgery for a sohenoid meningioma and lost my short term memory. That same year, my sister and I had a terrible falling out. It stemmed from me getting fed up with her constantly trying to diagnose me with Borderline Personality Disorder (nevermind that I had a sphenoid meningioma).

Recently, I found out that my social media had cached all of my sister and my conversations for more than the last ten years and, having forgotten them, I decided to read them. Much to my surprise, she had tried to convince nearly every time we had a disagreement that I had BPS, long before our falling out. I shared some of these messages with family, because when we had our falling out, the family tended to take her side because I had threatened to turn her in to the Behavioral Health Board for telling my friends and family I had BPS when that wasn't true. My family and she felt like this was unfair to her even though she never went on to get her license.

After showing these messages to my family, they all changed their minds about what had occurred. They didn't believe me before when I had told them my sister had been doing this for years, but now I had proof she had been doing it. The sad thing is, she cut off all contact and wouldn't and still won't let me see my niece and nephew who I was very close with before. I have offered to pay for us to go to counseling, and though I am very resentful of my reputation being ruined by her telling my friends and family I had BPS, I have apologized for threatening to turn her in to the Behavioral Health Board.

I just don't know what to do. She has become semi-famous and often talks about family issues, but now she has cut out almost all of the family. I miss her and don't know how such a rational-minded person could believe cutting out their entire family is good for them. I miss my niece and nephew. I want her to go to therapy with me, but it seems she never wants to fix this and we will always be estranged. What can I do?