Have some sugarless candy on hand so when friend lights up youpot in a candy. Or do some deep breathing thru your mouth. When she lights up get up and go in other room, get drink of water, go to bethroom, close your eyes and think of pretty lungs. Good luck. I stopped several times over a 45 year period and have not smoked in 2 years now, longest I ever went. Take care.
Linda
P S I stopped because of the cost and it is what keeps me from going back. Think of all the fabric you can buy now.