My line-manager emailed everyone in the office last week to say she was non-binary and we should use they/them pro-nouns.
Today I inadvertently called her she in an email to a colleague in another office, but line-manager was copied in, plus her line-manager. Are you keeping up? 
My line-manager responded to the email and added at the bottom a reminder about her pro-nouns.
I do not believe in the gender identity ideology and so object to being told to speak in an unnatural and incorrect way, but what I am incandescent about is being called out in front of 2 other colleagues.
Am I over reacting?