When my dad had a surgery that should have killed him and then made it through they sent an elder that he didn't know to visit him... I guess because it was too far (read 45 minutes) from his congregation and it would be too much trouble for the elders in his congregation to drive that far. Anywho, the elder didn't know any of us so aside from my dad he didn't know anyone's status or views. So he introduces himself by shaking my dad's hand, "Hello, I'm John Smith, you can call me John." Then he shakes my brother's hand, "John Smith, you can call me John." Then he shakes my hand, "John Smith, you can call me Brother Smith."
Now, I had a few options. I could think 'what a misogonystic fucking asshole' and then proceed to be pissed and give him a piece of my mind.
Or I could be respectful of my dad's wishes, think 'what a poor deluded idiot, I feel sorry for the fact that he is so insecure that he has to make such a distinction' and just ignore him going forward, which is what I did.
They only have the power to piss you off if you give them that power, Noni. They don't rule your life and they shouldn't rule your emotions. Don't let them push you around but also don't let them press your buttons. You are better than that. Think of how far you have come since your uncle's surgery. Don't give them the satisfaction of dragging you back down. If they act like assholes politely state the facts as they are, "She's my mom, if anyone is uncomfortable being around me they are welcome to leave," and then ignore them as the petty nuisances they are. Don't feed their ego by responding to them any further than that. They aren't even worth your disdain if they are the kind of people who would ask you to leave your mother's side during such a time.
I hope your mom fares well.
Best,
Jackie