Spilling the Beans by Clarissa Dickson Wright (audio book)
Blurb from cover
Clarissa was born into a wealthy family of food lovers who thought nothing of flying pigeons in from Cairo for supper. Her mother was an Australian heiress and her father was a brilliant surgeon to the Royal Family. But he was also a tyrannical and violent drunk. Clarissa was determined and cleaver, though, and her ambition led her to a career in the law. At the age of 21, she was the youngest ever woman to be called to the Bar.
Then disaster struck when her adored mother died suddenly. There followed a mind-numbing decade of wild drinking. Rich from her inheritance, in the end Clarissa had drained her entire fortune. It was a long road to recovery along which Clarissa finally faced her demons and turned to the one thing that always brought her joy