I remember a book being besides my Mum's bed when i was a young teen. She would never let me read it because it was too grown up. Thing is, she has been gone a while, and I would really like to read it as it was one of her favorites. Ok, see if this rings any bells. A woman is standing naked in the sea with her back to the camera. She is holding a machine gun over her head. I think she is looking at a desert island. It was the late 1980's. Anyone???