Got this girl. Cute, sensible....but she occasionally smokes sheesha.
In rare times of stress, she would smoke a cigar. I believe she is trying to quit.

So folks: If a person was otherwise perfect, but has this struggle, would you date/court/marry her?

if she doesnt stink of smoke then she is ok, but if her breathe stink of tobacco then its a NO-NO for me

over my living body

Lol. Everyone has what works for them. I need to know why she smoke though they can't be any good reason to smoke. Its a habit, so I will help her overcome it.

Secondly, you need to know how long she have been into that. If she have been smoking for more than 3 years, then it is very hard to stop her from smoking. But if she is just starting, then you may need to discuss it with her.

How?
The first line of action is to know the alternative to smoking. Does she smoke when she is alone? If yes, then you must try to be with her always. Loneliness can make one do anything.

The next is to examine the kind of friends she moves with. They may be the reason why she smokes. Help to reduce such circle of friends by being a best friend to her.

Always reward her. For each time she makes progress, reward her. Encourage her and let her see she can do more, achieve more, and be more. You can reward her by taking her out, or getting a gift for her.

I think this should do