I'm working on this website for a client, it's finished as far as I'm concerned. I knew the person before this and am friends with her sons. Problem is I have already over delivered on the job, but she is still demanding more. I can't really want to ask for more money as I don't want to create bad feeling, but I need to draw the line somewhere. I have met her twice and both times have spent 3 hours explaining how the site will work and how to use the CMS. That's 6 hours of meetings/tutorials before I add the hours spent putting the site together. She now wants to meet again to go through more stuff. I really don't have the time and I have already done the demo for her, it's not my fault she didn't listen, how do I break the news gently and get my money?