The author of Frankenstein always saw love and death as connected. She visited the cemetery to commune with her dead mother. And with her lover.

From jstor.org By: Bess Lovejoy 

“Her mother’s grave: the setting seems an unusually grim, even ghoulish locale for reading, writing, or love-making,” Gilbert notes. Yet for Mary Shelley, the cemetery was not merely a repository of rotting corpses, but a site of knowledge and connection: It was a place where she read to deepen her literary education and her communion with her mother, and a place where she was inducted into mysteries of sexuality. Literary, familial, and carnal knowledge were all bound together in one place.