Rob, I wanted to compliment you on not turning this into "you WILL believe, or else", but rather focused on what it means to commit and be reliable to others. Not an easy way through it, any way you try. I greatly respect what you tried to do, and greatly appreciate the humor that you somehow managed to retain.
Nice job, Dad!
Yes, I have no religious beliefs and I'd say the same - being reliable is the key thing here. I think you handled it very well by the sound of things, and the fact that she did indeed do the cleaning etc. you told her to, rather than saying F--- you and running away, says an awful lot for you as a parent, and her as a daughter. It sounds like you are doing an excellent job, but I'm sure you knew that!
Just out of genuine curiosity Serpico, if one does 'suddenly stop' belonging to a faith because they don't believe in it any more (how could you in all honesty carry on if you decide you don't believe in the existence of God/gods, or that faith's version of him/it/them?) surely the church would welcome you back if further down the line, on mature reflection, you want to come back into the fold, with solid, renewed faith? Or is that not how it works? If a person is confirmed but doesn't really believe, isn't that hypocritical? I ask this in all respect, as I have friends who are Catholics, and some others Baptists (the mellow Antipodean version!) but have never discussed it.