Would Molten Alliance rlly work for Scarlet?
Well, the main reason I can think of for the gender biases is simply this; Scarlet isn’t the REAL boss. She’s an underling controlling underlings.
Secondly, these groups banding together may not be mutual, but forced. It’s been referenced in the events in the case of the Aetherblades she says “Have you met my Aetherblades? They work for me. Because they like living.”
So, its not so much they WANT to help her, it seems like they are more likely forced into that. Something or someone is powerful enough to cause these disputes to be set aside, regardless of personal preferences or ideals.
Duty is heavier than death.