I am not a Catholic so I do not venerate Mary as anything other than the vessel chosen by God to bring Christ into the world. She has no special powers or influence and she is not in Heaven pleading with her vengeful Son to keep him from destroying all mankind.
That having been said, though, I find something like this novella sick, disgusting, and completely un-Biblical. The author is obviously a person with some deep-seated issues with the Church and used this novella as an attack. I pray for his soul