Born male, now she's a transgender woman. FACT.
Unless you're saying and it sounds like you are that transgender men and women don't exist.
That's ridiculous. Of course they exist.
Just because you might be opposed to their existence, does not negate their existence.
Reminds me a school mate I had.
Boy was she funny.
She insisted that there were no people in the world who didn't speak English.
Nothing you could say to her changed her mind.
I'm sure she eventually learned.
But those that insist transgender people don't exist, I'm not so optimistic.