Xena and her movie and TV sisters have a lot to answer for in action/adventure scenes. Some writers see these women as realistic female fighters, and they aren’t even remotely realistic either as women or human beings in fighting methods, stamina, and strength.
Maybe your warrior princess or action babe in leather and overpriced stilettos is as tough as any man, but she will have certain physical limitations. Use those limitations to be creative in fight scenes.
The strongest woman is rarely as strong as the strongest man, but she may be faster, smarter, or more supple, or she may be trained in combat when he isn’t. Use her realistic strengths rather than using unrealistic strengths.
Many women are pragmatists, as well. The rule that both parties must use the same weapons for the fight to be “fair” has nothing to do with reality, and pragmatists know this. If a huge man with a knife charges toward your action babe, she should shoot him and not feel bad about it later.
Years ago, I had a chat with a world-class weapons and combat expert about fighting. I asked him who was the most dangerous opponent in a fight.
His answer-- “In a bar fight most men will keep fighting until they go down. Later, they’ll get up, and we might have a beer together. A small man doesn’t do that.
“To him, it’s not a fight, it’s survival. He’s fighting to kill because he knows he might not survive otherwise. If he goes down, he doesn’t stay down. He comes right back up and keeps fighting until he takes you down.
“He’ll use any weapon he can find to kill you, too.
“Never pick a fight with a small man.”
Think of that attitude when you write a woman fighter.