Caught this in a Coven All Any game and no clue what happened. As consort, I visited a person that the Medusa visited with the Necronomicon. I was not stoned. Medusa was the only coven member in the game as well. This was on N3 so the first night Coven had the Necronomicon as well.
https://imgur.com/a/s1zFHPQ for Screenshots of my night action and the graveyard after.