You quite literally refer to Tabitha as “her” through this post. Just call them whatever the f!ck they want to be called an move on. Perhaps the problem is you?
This. If the OP can't use "they" correctly in the post, I believe the OP was using "she" and "her". The OP was not fired because they used "you" That's just what the OP made up in their head - assuming the post is real.