I dare you to call her, or any other trans gaffer a "he." She's able to spot pronoun mistakes like a hawk, miles away, and will stampede her way in and caps you to deafness; "IT'S HERRRRRRRR!! RAAAAAAAGE!!"
I did it once unknowingly and wanted to slap the shit out of her. You do not promote awareness on the issue by acting like a lunatic, calm the fuck down.