Harriet Bird's issue
Was Roy the third athlete she shot? Robert Duvall's character is reading a newspaper article about the other cases.
Obviously Bird was psychotic, but what was her issue - she wanted to kill people who were the best at what they do, and then kill herself? I wonder if the book goes into her character better than the movie.
In the movie she was not a person so much as a symbol or metaphor. She was just evil and destructive, so she always wore black like Memo. Then Iris comes along like an angel in white.