A friend I've known for forever has fallen for the Bill Gates wants us to all be injected with chips so he can track us. Like your mom, she's smart. She's an engineer, in fact. Aren't they supposed to be more skeptical by nature? Does she not realize we all carry around chips with us all day long in our phones? Even a doctor I used to follow for his longevity advice appears to have fallen for the Gates conspiracy.
The QAnon group is in a whole other league. I just can't understand that conspiracy, however, I did try by reading a couple lengthy posts on Medium.
I think your rules with dealing with your mom make great sense. Hope it's not for too much longer.