I assume you knew you had a smoking fetish when you met her...So why would you pursue the relationship with her, knowing she did not and will not ever smoke? I am forever amazed at the many posts such as yours. It doesn't matter how smart, funny, caring, successful, or pretty she is. You will most likely never be totally happy, and WILL be looking and lusting at other women who DO smoke.
I don't have any advise for you other than what you don't want to hear, but I wonder what you were thinking when you got involved with her. If you truly have the smoking fetish, don't underestimate it. It will normally prevail one way or the other. Good luck.