Stay tough and don't give in Kim. You are doing the right thing. I know it is hard and I had kids who hated me lots of the time but now I am proud of them and they even like me now (I think ) But then, they are 20, 23 and 26. Hubby and I were mean and pretty unyielding once our trust had been betrayed. It had to be earned at great price again. We always prayed that if they did something very wrong that we would find out or that one of our friends would find out!! Getting caught early is a GOOD thing. I really do feel for you to have teenagers right now - so dangerous out there and they just feel invincible.
BTW, I think the driver's licence is a great idea, as is the cleaning. The discipline suits the crime and she has the incentive to correct her ways. ((((Kim))))