...to buy that additive free tobacco, it would be for my mum, she smokes like a chimney and im worried about her...

Hi Dawn, I wouldn't worry about your mom's smoking -- that's what keeps her endocrine and immune systems as well as MAO levels few decades back from her chronological age, compared to her non-smoking friends. The most critical point is that she isn't guilt ridden about it, since the witch doctor effect[/b] causes real harm:

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There was a study in Heidelberg, described by [b]Professor Eysenck in Psychological Reports (1989) in which 528 men were asked whether they, as smokers, were convinced that they would be very likely to develop lung cancer, heart disease, or other 'smoking related diseases'.

The 72 who answered 'yes', while admitting that their views were taken from information in the media, had an almost three times higher death rate at the end of 13 years than those who were not so influenced.

Fear can kill. This has been known since disease was first studied. We are entitled to wonder how many people have been killed more by the fear of 'smoking related diseases' than by any actual disease itself.
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To help her shake off this insidious antismoking "death curse" and enjoy the full health benefits of smoking tobacco, as people have done it for at least 18000 years, I would print for her Dr. W.T. Whitby's book "Smoking is Good For You" (get online PDF copy of the 2nd edition) or send her online to check several other references I gave, especially Johnstone and Colby.

As to physical aspects of smoking, she could move to roll-your-own (RYO) or stuff-your-own (SYO) methods, which offer much wider range of traditional tobacco blends (and save great deal of money in the process). Note that filters shed non-biodegradable fibers, which lodge in the lungs and need to be enclosed into mucous liquid and coughed out. The plain tobacco leaf produces only organic molecules (there is no "tar" in tobacco smoke, only microscopic particles containing organic molecules; "tar" is an antismoking propaganda term, an aritifical smoke condensate, not what people inhale i.e. "tar" is to tobacco smoke what a muddy puddle is to a cloud in the sky) which live cells, such as those in human body, have been metabolizing safely for hundreds of millions of years.

<img src="http://www.biopark.org/peru/N-rustica-flowers-01a.JPG"> <img src="http://www.biopark.org/peru/N-rustica-plant-01a.JPG"> <img src="http://www.biopark.org/peru/N-rustica-leaf-01a.JPG">

Regarding cigarette tobacco blends, there are hundreds to choose from in the RYO/SYO realms. The healthiest are either pure natural leaf blends, such as American Spirit, American Bison, Sagamore Natural, Manitou (German blend from Von Eicken), Smokin Joes Natural, Blackjack Natural,... or classic blends from traditional tobacco masters, such as Dutch (Heupink & Bloemen, Royal Theodorus Niemeyer), Danish (Mac Baren, Peter Stokkebye), British (Gawith Hoggarth, Dunhill blends from BAT, Golden Virginia from Imperial Tobacco) and German (Lane Limited Ltd, Von Eicken), which use old style additives and flavorings (apple, black cherry, oak,...). If she has to smoke supermarket cigarettes, Winston Regular are now made from additive free whole leaf, although one would still need to snip off filters to avoid inhaling fibers. In order to cool the smoke of non-filtered cigarettes, one would use traditional cigarette holders (4 inches or longer), which look pretty cool, especially for women.

<img src="http://content.answers.com/main/content/wp/en/thumb/1/1d/250px-BreakfastatTiffanys.jpg"> <img src="http://www.aristasia.co.uk/CigaretteHolder.jpg"> <img src="http://theladysmokes.com/Glmaour_Smoker_Girl.jpg">
<img src="http://www.sueddeutsche.de/kultur/artikel/331/28303/image_fmabspic_0_0.jpg"> <img src="http://www.displaycostume.com/store/files/images/large/d_1597.jpg"> <img src="http://theladysmokes.com/Holding1copy.jpg">

Entire realms, rarely expolored by women, of good healthy choices open up if she wants to experiment with pipes or cigars.

<img src="http://www.photofreeway.com/data/500/Cigar_Lady.jpg">

Another requirement of healthy smoking, due to the fact that smoker's basal metabolism is higher, with immune, endocrine and nervous systems upregulated to nearly double the levels of nonsmokers, are sufficient supplements, in particular Vitamin C, zinc and E+selenium. A rich traditional diet along with traditional beverages (coffe, teas, cocoa, wine), especially mediterranean diet, or at least natural orgin supplement complexes (at double doses recommended for nonsmokers) should be used. Finally, she should stay away from doctors and pharmaceuticals they peddle, especially statins and antidepressants.