My mom won't let me, 'cause she thinks I'll turn into a "ARE YOU F!@$%#^G SERIOUS? THAT GUY IS TOTALLY MODDING!!!111!" screaming fiend, like my older brother used to be.
Well, its a game, nobody's gonna be a little angel ....
If you have to, let her watch you play and show her that you can restrain from using naughty words....
I'm serious on that.