What a giant, extra-crispy bucket of stupid. Here's what makes a woman: Intent.

Remember intent? It's kind of a big thing in criminal law. It's the difference between manslaughter and murder. We treat killing people very differently depending on the killer's intent. Murdering for a life insurance payout? Very bad. Manslaughter with a car? No biggie. Killing an enemy in war? Laudable.

Point is, intent matters, in this and lots of other ways. So if a person intends to be a woman, she is a woman.

(And, yes, if a hen could conceptualize and express intent to be a human woman, I say that we should consider her as such. Shit, The Android Who Wants to be Human is a well-worn sci-fi trope, so why not a biological organism, too?)