Hey cubeyz,
Thanks for your response.
It's interesting that you know some families with Trans siblings. I've never come across such a family, but I've to say in my country Trans just starts to gets recognised more, but it's still a stigma, even under psychiatrists. It's still very common to get misdiagnosed with BPD or delusion or even schizophrenia, when you go to a normal psychiatrist and tell them you feel in the "wrong body". It also happened to me. But luckily there are experts in this area and now after I've transitioned, no one doubts it anymore.
Actually my mom told me that my aunt had an episode where she talked about how it would be living as a male when she was younger. But she never transitioned or did anything and I dunno how serious it was, since my aunt never talked about it herself to me. Actually my aunt was even the person who was totally against the fact of me transitioning and even broke up the contact after I did. Sadly she is my cousins mom.
My aunt would have revered it to see me looked away in psychiatric care, than transitioning and even told my mom and wanted to influence her that she gets me looked away in the psychiatry or anything, just to stop me from transitioning.
I dunno what's going on with her, or why she reacts so extreme, but it feel sorry for my cousin thinking about it, but my aunt doesn't know yet.

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"I'm astounded by people who want to 'know' the universe when it's hard enough to find your way around Chinatown." - Woody Allen