Her response was a non sequitur. Can a man, transgendered into a woman, become pregnant? No he cannot. However, by calling Hawley transphobic, she was just using a new version of the race card. You're racist / transphobic / homophobic / etc etc. It's meant to shut down any further discussion.
That’s the way liberals argue.
They state non sequiturs. They don’t discuss the facts. They don’t use logic nor reason.
Then they call you names like “homophobe, transphobe, ...”
Then claim to be open-minded while you are closed-minded