The Girl on the Train The first half of the film is about the delineation of a really sick person -- Emily Blunt's Rachel. She's irrepressibly alcoholic. She has lost everything of meaning to her, and now she's dependent for survival on the kindness of a very tolerant friend. And for something to live for: getting glimpses each day on her train ride ostensibly to and from work, of a couple who live a dream of life of never-dissipating sexual interest in one another and who are absolutely gorgeous to boot. She's the sagging hag, drinking deep her water-containered vodka, while they're redolent of living Adonises from whom even a fountain of youth might draw inspiration from. The only other version of her that we see is when she reminds herself of her behaviour when drunk while with her husband. She acted out, a lot; she was violent. She damaged other people's lives; cost them their jobs. Her husband evidently couldn't deal with it anymore...