Well, @Joolsin ,there followed a conversation that was hilarious to me, frequenting these pages as I do.
She was really flustered and said she could not believe a bloke was in the loos. I said how did she know it was a bloke, she said it looked like one.
How do you know it wasn't a trans woman?!
Because he didn't looook like one!!!
What does a trans woman look like?
You know, they make the effort, with the hair, the clothes!
What was this person wearing?
Jeans tee-shirt.....
What, like half the women in here!!??
But you can tell when it's a trans woman!!
How?
Etc....... And no, she did not immediately admit she was wrong, or that it would actually impact her, but she was not at all vocal about trans rights after that....