Luckily, no one else in my family were ever JWs. Just my in-laws...which is plenty bad enough.
But my father is a master manipulator. I'd even call him machiavellian, like the archvillian from a TV show. My step-mother is pretty far up there as well, though in a way that's more typical of manipulative mom's. She treated her own daughters considerably worse than she's treated me, so I guess I was lucky.
I have very little to do with either of them now.
Now I think someone else mentioned this particular piece of advice, but it works for me, so I'll repeat it.
Just because someone is related to you doesn't make them family. Don't confuse these concepts. If your mom is poison and truly believes she has a right to be, then you're within your rights to treat her as poison. No one has the right to make you miserable to make themselves feel better. Not even your parents.
Being a parent isn't just a right that gives her some entitlements. It's a responsibility. You can't demand the one to an unreasonable degree without fulfilling the other to an unreasonable degree.
If she wants perfect deference out of you, then she needs to be the perfect mom. There's no such thing. But she'll keep hitting you with whatever works to get what she wants. Including guilt and telling you how much you owe her.
When do your wants matter? Shouldn't they matter to a loving parent?
Don't let yourself be swayed and used by guilt.