To be very strictly fair, the villagers are unlikely to know abuse victims prefer poison. That said, I'd expect the narrative to be 'she must have gone mad'.

Axis does seem to have the 'correct' attitudes towards magic, yes. Somehow.

Given that the pacifist Avar consider violent rage downright saintly, I'm thinking Doughlass just... doesn't think outbursts of rage are bad! Which is rather baffling coming from someone who presumably lives in a society, but here we are.

I'm thinking the Sentinels did quite a bit more then healing Beliel.

Well, it's certainly sacrilege, the mistreatment of sacred things, whether it's blasphemy depends on whether they were inwardly mocking the religious practices. So they very likely were being blasphemous, but we can't prove it.

And here we have yet more reason to believe Beliel's mind has dirty fingerprints on it.