I just learned about these girls the other day and checked out some of their stuff and they actually aren’t bad. There’s only three of them: A girl who does decent lead guitar and not-as-decent vocals, a drummer who doesn’t have much of a kit, but does well with what she has, and the real star of the band: The bassist.
Check this girl out! I’m not the biggest music guy in the world, but I’m pretty sure that she’s a damn good bassist, and I don’t have to even qualify it with a “as a girl” or “for her age”.
Here’s another (better quality) video of one of their songs. They could use some refinement and a good manager, but I think there’s some pretty good potential there.