Hi Lucie,
 
First of all, CONGRATULATIONS on achieving and now surpassing 6 months free and entry into our Freedom Silver Club.  Make sure to let Marty know with a note so he can add you to the roll. 
Also know, although I decided to no longer allow nicotine any role or control in my life nearly 6 and a half years ago my son, whose own addiction to smoking in large part motivate me to quit, continues to be trapped in nicotine addiction.  He doesn't continue because he doesn't know it's an addiction.  He continues because it IS an addiction and only he can decide to reclaim his mind, his body, his life.  Many factors should force him to stop allowing nicotine to dictate his actions in large part but he has not yet found the courage or will to break himself free.  It will happen, but it will be when he decides what's best for him.
If I were you I would absolutely come clean with my daughter.  Let her know what we as active addicts give up when we stay trapped in the cycle of addiction.  Also let her know what she has to gain by choosing o live life naturally, normally, free of tobacco and nicotine with its health consequences, its cost, its stigma, its needless intrusion into our lives.
Only you can take your quit away from you Lucie.  I can tell being free has great value to you already and that value will continue to accrue as long as you choose to do what we all do who are in recovery from nicotine dependency - stay clean of nicotine for the rest of today.

Who's to blame?
Why do I smoke?
"I can't quit" ... or ... "I won't quit"?

Joe J free - Free and Healing for Six Years, Five Months, Seven Days, 21 Hours and 55 Minutes, while reclaiming 440 Days and 14 Hours of my precious life time by choosing to not use 63448 nicotine delivery devices that would have cost me $20,996.76.