I'm not sure if 'Shelley on the Farm' is an erotic novel. There could be many books with this title, and without more specific information, it's hard to determine if it has erotic content.
One of the most famous Shelley novels is 'Frankenstein'. It's a classic in gothic literature, exploring themes of creation, monstrosity, and the consequences of playing God.
One idea could be a story where Naruto meets Shelley Hennig in a mysterious new world. They have to team up to fight against an unknown evil force that threatens both their worlds. Naruto uses his ninja skills, and Shelley Hennig uses her wits and any special abilities she might be given in the fanfic.