Lunatic Sisterhood (all armed with scimitars & sickles as symbols of their membership)
The Dirty Coven
La Belle Dames sans Mercy
The Mercy Nary Company
The Crimson Lillies
Or a little more tongue in cheek: The Hearty Housewives or just The Hearty Wives.
Maybe Silk and Steel.
Even The Thorns of a Dozen Roses, or The Bouquette's Thorns.
Perhaps The Cat's Claws.
The Widows of War.
Mother Bears.
The Breathtakers.
The Striking Sisterhood.
The Solid Doves (a pirate band in my Iron Kingdoms game, on the good(?) ship Victorious Secret).
The Crows of Morrigan. (Alt. The Hounds/Bitches of Morrigan.)
The Sisters of Ceridwen.
The Empty Womb. (Assumes sterility.)
The Consanguine. (Those who bleed together.)
Hippolyta's Chosen.
The Choosers of the Slain.
The Bows of Diana (assumes archers).
Hope that those help.
The Auld Grump
Storm Crows / Harpies / Maidens
Riders of the Storm
Sisterhood of Steel