by Emergent Games
Maxine is the leader of the Femme Fatales, and is still included in the female variant pack. So, there are currently 6 female hero variants total. You just happen to get a free copy of one of them in the core set :)
Comparing the silhoettes (for whatever it's worth) Maxine looks to be one of the Femme Fatales. This may only be a place holder, but from the wording I think there are only 6 female characters and one from the addon box has been moved over to the core set. We can probably expect some clarificaion later on this.
is Maxine one of the 6 female Heros or the 7. ?