"in chapter 24 of frankenstein, victor finishes his story to henry walton, and henry continues his letters to his sister, thus bringing back the structure that began the novel. this return to the letters brings the frame structure of frankenstein full circle. how does the frame structure develop the plot and characters in the entire novel? explain how mary shelley’s use of framing develops the various narrative elements in the story. provide examples and evidence from the entire text to support your analysis."