Her backstory appears to be linked to the armed forces, based on the trailer, and I doubt the military trained her in fighting with a cape on.
Who would have guessed that Kate could nail the fighting and the theatricality of a Bat-hero without Bruce’s tragic backstory?
Whether or not she goes by Batwoman or is trying to convincingly be Batman in this scene, she’s going to look fantastic sticking the landing, and I’m guessing definitely scare whoever she’s chasing.
Effective vigilantism really does run in the family!