This was one of the first sanity checks my therapist asked me, how is it in regards of friends?
My ex got abandoned by almost all her friends when she had an ovary surgery when she was younger (age 12) and almost no one came to visit her. I remember her speaking about this as; "... .a$$holes... .".
Her father cheated on her mother, but her mother has no knowledge about this (as to this day... ) and her father threatened to tell her mother to completely destroy the relationship and thus the family. When I met them, her father was the one telling my EX, to STOP LOVING ME. Oh the irony! :D
Both her brothers have cheated on their partner. (

). I guess it runs in the family.
During the time we were together, my ex was 100% against her sister. She was the devil and every time she had to visit her she cried because she SO not wanted to be with her and visit her and never be dependent on her. They came to visit us once as well and her sister went berserk at my ex, telling her she's fat and ugly etc. Funnily, this sister is in a relationship with a muslim and has hit her in the past.
1 week after we broke up, she told me how much she loved her sister. How much she never realized how much she loved her sister and how she will always love her sister and support her wherever she can. Oh the dysfunctional irony

.
I remember the so called 'friends' she made during our time together where the typical, 'on the leash' friends. They called her often, she never picked up, only when she wanted something of them :D. Meaning if I wasn't there she would pick up, other than that she would just ignore. Not even a word and the moment they came some silly excuse. She always told me she did this because of me.
She is like a chameleon, she blends in, sucks people in their life and is 'best friends forever' but no one of those people really get close to her. She told me she uses a 1000 different faces for a 1000 different situations. And then she goes away, moves to a different country, has no issue of dropping everything around her and continues her game again.
And I am speechless that there was once a day I (thought) i was madly in love with this girl and who wrote me letters to marry me.