At this point in our reading, Mathilde is a grey-blue question mark wrapped in an enigma wrapped in a burrito. Before we get to her side of the story, let's speculate: what's her deal?? @BookClub
  1. She shot a man in Reno, just to watch him die
  2. She causes Lotto's death.
    If not Lotto, then the composer. Or Chollie.
    Suggested by @kemnyc