Darlene Cates, who starred as the housebound mother in What’s Eating Gilbert Grape has died. Cates died in her sleep Sunday morning at her home in Forney, Texas. She was 69. Her daughter Sherri Cates Morgan announced her mother’s death on Facebook (see below). In the announcement, Morgan wrote "We take comfort in knowing that she is no longer in pain and is in the arms of our Heavenly Father.” Cates is best known for her role of Bonnie Grape, the housebound, overweight…