She absolutely smokes in this video of the Smashing Pumpkins playing Superchrist:
http://www.youtube.com/watch?v=yV-os9nopew
I really respect the fact she can go from fronting a power pop band to locking into a groove with a monster drummer like Jimmy Chamberlin in a space rock jam. Her tone kicks ass too. I hope Billy makes her a permanent member of the Pumpkins, because she blows D'arcy out of the water (heck, they're not even in the same league).