In fairness, there really isn't a good time to fire someone. I would normally think that the end of the work week is one of the least bad times to fire someone.
Edit: Also, even if that's the best time, you should ensure you make personal contact, and not just do the equivalent of a ghosting.
People that think like this baffle me
When I refer to people online, I rarely use 'pronouns'. IMO in online communication, it's most clear/neutral to just refer to people by their name or username, e.g. if I'm referring to you I might just say @beerandt. I can't imagine how that could be seen as offensive in any way
I can see a case where trolls could abuse it, but that shouldn't preclude well-intentioned use.
(Honesty question. I'm curious what the connection is, and that's the best I can think of.)
They also did this at 6 pm on a Friday. She's Jewish.