What is she?
terrifying
And now I kind of want Mary as a demon, and John in love with her anyway because he can’t help himself, and she’s kind of fond of these two crackpots, you know, they’re cute and they’re nuts and they’re just so much fun to fuck with, and Sherlock is just like, “This is so ill-advised” but he’s hardly going to leave John alone with her and, well, she is kind of a good time.
…That’s not really terribly different from the show, is it?