One year after her mother's death, Lisa Swallows (Katherine Newton) is still reeling. Her father (Joe Chrest) has remarried, and while her stepsister Taffy (Liza Soberano) tries to help her, her stepmother (Carla Gugino) has it in for her. Lisa also has a crush on classmate Michael (Henry Eikenberry). Isolated, Lisa spends much of her time in a historical cemetery, often talking to the grave of a young Victorian man (Cole Sprouse) who died after the woman he loved left him. When lightning strikes the grave one night, the man reanimates as a zombie.
Mary Shelley is the Godmother of Goths. She's so Goth, she lost her virginity on her mother's grave, and after Percy Shelley died, she kept his preserved heart, wrapped in poetry.
I suspect Mary Shelley would respect what Lisa does near the end of Lisa Frankenstein. I won't spoil what that action is - other than say it involves some handy needlework - but it is the most Goth thing I've seen on film. Ms. Shelley would appreciate the gesture, I think.