When Blood Meets Silver

Hyunjin stopped on her tracks behind a wide tree. Her eyes widened at the girl holding two curved blades, too long to be knives, and too short to be swords. The one on her right hand faced upwards, and the one on her left faced backwards, her fingers gripping so hard on the handles it had turned her knuckles white. Her eyes were open and alert, and her eyebrows knitted together as she took small steps around, her eyes trying to face everywhere at the same time.

What was a slayer doing there?