If you were the world's worst mother, it wouldn't really have bothered you enough to post about it. Or if you did write about it, you would have spent more time complaining that the rotten kids fooled with the car and now you have scratches in the paint! We've all done stupid things with the kids. We get overtired and overwhelmed and shit happens. Try not to beat yourself up about it - you're a GOOD mom, Wendy!