Quit with her and be a support, if she's a very heavy smoker, like weedhound said they have pills. Otherwise, buy some patches or gum, and keep a bag of suckers around, part of the addiction is the oral fixaion of having a ciggarette in your mouth, keeping suckers around helps conquer that. It helped me when I was quitting. Now I only smoke socially or when im drinking, which is usually in social situations.