Kathy Griffin said Tuesday she was not doing well after Maggie Griffin, her mother and former reality show co-star, died Tuesday at age 99.

My Mom, the one and only, Maggie Griffin, passed away today, the comedian wrote with an Instagram photo of them gazing out at the hillside scenery. Hours ago. I am gutted. She was my best friend. She was my family. You knew her. She appreciated you guys so much. Im shaking. I wont ever be prepared. Her point of view. So unique.