Dawn French has said “suicide lives in my brain” after her father took his life when she was 19 years old. The actor, best known for playing the chocolate-loving Reverend Geraldine Granger in the hit sitcom The Vicar of Dibley , opened up about her father’s death in a new interview. Her dad, Denys, who worked as an RAF engineer, died by suicide aged 45 in September 1977. French was 19 years old at the time. “Suicide lives in my brain in a way it might not for somebody who hasn’t experienced it so closely,” she told The Times . “And as I’ve got older, I want to talk about the big things. I set out to write something I’m a bit afraid to admit: that getting older is difficult, end of life is difficult, suicide is difficult.” French, 68, is tackling themes of loss and suicide in her fifth novel Enough . Set in Cornwall, where the actor grew up and has lived for the past 20 years, the book follows the character of Etta who is planning to take her own life.…