The 31-year-old has spoken out in an official statement to People, exclusively expressing her heartache: "I haven’t been able to bring myself to write most people back to thank them for their condolences. I am heartbroken. I am in disbelief".
Crystal continued, “He was an American hero. A pioneer. A kind and humble soul who opened up his life and home to the world,” she adds.
She also explained she's "so grateful" for the support her late husband gave her in various aspects of life, and that "he saved my life" and there will never be another person to replace him.
It comes after the family laid Hef to rest on Saturday in a private ceremony at the famous Westwood Village Memorial Park, where he will lie next to Hollywood icon Marilyn Monroe.
The publishing mogul was buried in his signature look wearing red pajamas, smoking jacket and captains hat according to The Sun UK.