My personal take is to just use lawyer, when gender is irrelevant. This may get your audience confused when using “she” in the next sentence. But it could help weaken the stereotypes about genders if we did this more often IMHO.
If needed “female lawyer” or “lawyer who is a woman” are good otherwise.

I lived with someone like op described.

He was my father in law and I had no other choice than to suck it up for years. When I left home, he transfered his insane behaviour to his own daughter, who eventually went no contact.
Nobody would believe me, he was so good at making me look like the problematic teenager (good fucking riddance, François).

Some people ARE motivated into making a living hell for you. I know it is hard to even imagine it, because most of the time we live with (to some extents) reasonable people.
But these borderline psychos exist and often target those who are hardly believed by others.

Anyway, my advice to OP is as most said on this thread: document everything, up to the hour of occurrence.

Edit: forgot that post was about neighbors downstairs and not a roommate

I never clicked on your posts because I thought they were literally meh random screenshots and nothing more.
Damn was I wrong. You are building the Lemmy museum of videogames.
Thank you!!!

I’m deeply sorry to hear that. I have been in your shoes for five years straight. This is the first time I spend it in family since forever.
What I would usually do, is to prepare a very nice movie, or a great videogame I kept aside for a special occasion, drink wine, eat chocolates, the whole heartwarming exercise.
Other years, I would play a MMO and have a play/chat with strangers bored to death at their family gatherings.
I guess Christmas Eve is about giving. So my advice is don’t give up on you, you deserve to have a good time, no matter what makes you feel warm.