Do you have a free choice? Can you use shorter texts? If you need something C19th, might Sheridan Le Fanu's Carmilla work?
I personally think you could have a lot of fun looking at Angela Carter's Bloody Chamber - the Lady of the House of Love is obvious, but there is a lot you could do with the sly fun that Carter pokes at the 'mysterious dangerous aristocrat in a distant castle' and the comparisons between two very different rescuers.
I'd love to know what you end up choosing!