Paranoia due to religion, IIN?

They are basic questions, but they make no difference. It's not necessarily stupidity, it's often wilful denial or flexibility of interpretation.

People can and do interpret The Bible how they want. They can take some parts literally, some parts as allegories. They can say some parts refer to life as it was in a different age and that not all of it is applicable to modern times. They can say God meant one thing, or indeed another. They can even say not all of the Bible is true as it was written by various people, but that they believe in the basic idea of Jesus dying for 'our sins' and that Jesus is the son of God. That's what leads to myriad denominations of religions - minor and major differences in interpretation. This flexibility of interpretation allows people to refute criticism, or ignore it altogether.

But more powerful and frankly irrepressible than that is 'faith'. You can endlessly deconstruct a religious text upon which a religion is based, but that won't necessarily make a dent upon a fundamental belief, something often idiopathic, that a deity exists. It might seem irrational to you and me, but for some that certainty is intrinsic.

Anyway, enough about that. I agree there is no definitive answer. I just don't think in OP's situation provocation would be beneficial. I think if OP can fly under the radar until there is opportunity to move away then they should. Or if the problems escalate they should call either a support line or, as you say, the police. I think physical and emotional wellbeing is more important in most cases than confrontation to make a point, specifically when a child is involved (although we don't know how old OP is). Let's also not forget that in all likelihood the OP still loves and cares for their mother, despite her actions, and that the mother in all likelihood still loves and cares for their child - so maintaining some kind of relationship might be important.