Is there a girl heavy metal band?

Otep Shamaya !!! www.myspace.com/otep

or http://www.dotspotter.com/search/all/otep

Kittie and Octavia are female bands.

Arch Enemy and My Ruin are bands with female singers.

Also Elena Seigman... her songs include: 115 and Abracadavre... hope this helped :D