Stop Smoking Help

She is 42, and she has been smoking since she was a teenager. She smokes quite a bit, plus there is history of heart disease and cancer in our family. My grandmother (her mom) died in her early 50s from heart disease. Other than smoking, she is pretty healthy. I am really worried about her, but she is stubborn and acts like I am trying to boss her around when I suggest her quitting. Any help would be greatly appreciated!
I should have mentioned that she quit a few years ago for several months and then started back. I think it is kind of a stress reliever for her. She has a really stressful job.

I have recently quit smoking. (I smoked heavily for 11 yrs.) It’s been about a week, and I can NOT stop coughing. I assume my lungs are just healing from the previous smoking. How long does this horrible coughing last?

My friend had a major heart attack(she’s 39 yrs old)-and actually died 3 x -she had been smoking crack the night before-she is an addict trying to stay clean thru NA ( like me -only Ive been clean 5 yrs and never did use crack) I dont know a whole lot about how crack affects the body.What would happen if she were to relapse again?

My friend and I burned each other with a cigarette this past weekend…dumb, I know. They blistered the day after and I have since been using neosporin and redressing the burns twice a day. I also let water run over them and pat them dry before redressing them. Is there anything more I can do to avoid scarring? Any special scar creams or anything that has worked for anyone in the past?
Also, when should I stop taking care of them how I am now?
Thanks!

A friend of mine already has pretty raw skin on his arm and got a cigarette burn. What’s the best way to treat this?

I have been smoking for about 10 years and would like to quit. If anyone has a good idea or story, let me know. I appreciate any answers of comments.