Geraldine Chaplin - SPOILER

I love this movie, but this movie does not really deserve my love—it's quite flawed! One flaw is that it never addresses Geraldine's killer. Obviously, since she was calling everyone, she called Liz. Liz was in the same house as her, so it would've been easy for her to poison the inhaler. (Or it could've been Rock, who realized that since Geraldine made and poured and served the coffee, it could only be Geraldine or Liz; if Liz, as he came to realize, Geraldine had to go. But I think Liz did it.)