Refused job because I am 18?, Took a gap year. Help?

Hey Yahoo,

Basically I have been talking with the owner of a local chain of shops near me (Nothing massive but quite a few of them). I originally applied for a job and they said that I could have one and they would get back to me, Time went on and I was planning on going to university, I got back to her and said "Can I still have a job", She said I would have to take a Gap year as she was not looking to hire someone for a few months, I have now taken a Gap year, With the intention of working, and went into the store today and said "I've taken a Gap year" and she replied "You're friends are 17 aren't they", I said I have no 17 year old friends, All my friends are on their way to University", She then said "They smoke don't they" and I told her that none of my friends smoke as far as I am aware", She then told me she was unsure that she could hire me because she thought that I would sell them cigarettes, I said that I wouldn't, I had no 17 year old friends and I having studied Law for 2 years understand the consequences of doing so, she carried on saying the same stuff, Normally I wouldn't mind but she had assured me If I took a gap year then I would have a job, she also keeps saying "I will think about it" and never gets back to me. Right now she is going to "Think about it over the weekend", I have to stress I have been as polite as I possibly can be and made a effort not to pester her. I am wondering, Is it fair to not employ someone for an action that haven't committed

Once again people of Yahoo

Thank you!