I do ''understand meaning''... agreed. but it wasn't anything=it was the combination of everything she experienced because she was trans.
Let me put it another way.
You work on fixing something in your house. You cut your arm, you try to take care of it, but it gets infected. The infection goes bad and you end up dying. Now, did you die because you cut your arm, or because the infection went out of control ?
The actual answer is the infection, by the way. Sure you got infected because of the cut, which seems to be the root of all evil. But it could as well not have ended up infected. Not all wounds do.
And with your logic, if we're to find the root cause, then it's birth. Nea wouldn't have killed herself if Noah was never born to begin with. But I'm sure you can see how dumb that argument is.
Nea could have very well done her transition without people being assholes. Her dad could have tried to understand. Or she could have been something entirely different. She could have been bullied because she was a different ethnicity. Or because she had a birth defect. Or any number of reason.
Point is, the reason for her being bullied doesn't matter. Hell, she could have been bullied for no raeson at all, just because people decided to hate her. Same goes for her dad, it could have been any number of reason or no reason at all.
Her being trans isn't a "root cause of why she has to kill herself". It's just an excuse for others to try to justify making her life miserable.