Severian
Have a good time, all the time!
If you want extreme female-fronted music, you can do a lot better than ANb, who in any case did their best work when they had male vocals.
For starters, I would recommend all-female Japanese grindcore band Flagitious Idiosyncrasy in the Dilapidation. Their discographical highlight is their split 7" with Insect Warfare, issued with a 2008 edition of Short Fast and Loud zine.
Their vocalist is great live too:
ANB without female vocals is just Pig Destroyer. but yes Flagitious Idiosyncrasy in the Dilapidation are a better band, i saw them live in '07