Mae Greenleaf should get the Velma Mulholland treatment
If no one remembers Velma Mulholland from In Living Color, Google her. She's a character who was in black-and-white while everyone else was in color because she lived in an old movie.
That's what they should do with Mae because she's a straight-up psychopath out of a Gothic horror film. She should just be floating through the show in greyscale, standing at the top of staircases, casting film-noir shadows wherever she goes. Next time you watch her carrying on, just imagine her in What Ever Happened to Baby Jane? or as Margaret White in Carrie.