Surely all teen babysitters constitute a bit of a 'hostage to fortune' situation. I don't see why this one, because she was not getting paid as part of what she accepted as a fair family punishment, but nevertheless well-disposed and conscientious as far as anyone could show to the contrary, should offer more of a risk to home or children than any other? The fact that she was known once to have behaved a bit irresponsibly surely makes her not much different from any other teenager ~~ which of them hasn't?