By Esther Zuckerman
Updated February 08, 2015 at 12:00 PM EST
Larry Busacca/Getty Images

Before the telecast of the 57th Annual Grammy Awards even began Sunday night, Joan Rivers won her first Grammy, receiving a posthumous award for Best Spoken Word Album. The legendary comedian, who died at the age of 81 in September, won the prize for the audio book of her Diary of a Mad Diva.

Rivers, a nominee once before for comedy album, was in a category that included spoken-word works from James Franco, Jimmy Carter, John Waters, Elizabeth Warren, and Gloria Gaynor. Rivers’ book, which was released in July 2014, is written in diary form, and begins with an explanation that the diary was a Christmas present from daughter Melissa and grandson Cooper.

On E!’s red carpet broadcast, Melissa described the moment as “difficult” and “bittersweet.”