A part of me expects more of my only sister....Dorothy has always been exactly who she is, and for me to hope for anything better reminds me of a quote attributed to Einstein: Insanity is doing the same thing over and over again and expecting a different result.
Dorothy is predictable. She does the same thing repeatedly and expects not a different result but the same one she got the last time she did whatever she wants with little regard for anyone else. So maybe she's the sane one....