And totally unrelated, I had a (potentially squickey) story idea last night. It always bugged me that vampire stories involving human females seem to completely ignore menstruation. Why? It's like a buffet of blood that doesn't harm the donor at all...we just gush it out for days every month. I suppose that it's compositionally different from arterial blood so maybe it wouldn't taste as good? But seems like a non-discerning vampire could have a rotating stable of ladies of fertile years. Plus, for the sexy times scenes, orgasm leads to uterine contractions so a vampire adept at cunnilingus could reasonably view menstruating women as walking treat dispensers.
edited to white font the part that folks might find squicky.