There were the Shockforce battle sisters (I can't remember what they were called)... wasn't there a kickstarter for them as well (maybe that was the one that failed)?
I didn't think much to them to be honest.
As for female fighters, weren't there Etoilles Militant in the old Warzone game? I am sure that the new Resurrection game may ... um... resurrrect them at some point? You can still get the old ones on E-Bay and maybe from Prince August (if they still have stock).