psshhttt.... you can't stop it....
it's about time women's lib hit texas anyway, isn't it?
Seriously, it's a fucked up situation. The girls are sleeping around to be popular... but what does a ten year old girl get out of giving blowjobs? The chance to learn to suppress her gag reflex? Most kids haven't even finished losing teeth by then... which is really quite disgusting if one falls out in the process. *shudders*
Actually, it's nauseating. I'd freak out if someone stopped to pull out a bloody tooth.
Basically, what I'm *trying* to say for girls like your niece, and boys too, is that they need to feel more in control of their lives, more connected with the rest of the world.
Oh, and a good solvent can get those traces off... along with most of her skin, but hey, you have to make sacrifices sometimes.

"That girl thinks she's the queen of the neighbourhood, well I've got news for you... SHE IS!" ~Bikini Kill, Rebel Girl