More specifically, she'd discovered rooftops at midnight.
It quickly turned into a game. How far could she travel in a single sprint without having to pause for any reason? How high could she go while choosing only rooftop-to-rooftop jumps that went up? And then, when she noticed she was in a darker part of town with more lights that were destroyed, she learned a new twist to the game. How many could she protect?
She'd never felt this alive; she'd never felt as if she'd fit so well anywhere before.
As she stood over a group of mostly-unconscious lumps of muscle and ill intent, the only thanks she got was a pair of slender footfalls fleeing down the unlit street. It was enough, though. She grinned, then grasped the drainpipe attached to the side of the building where she stood, pulled herself up quickly enough - bracing her foot briefly on the nearby trash bin - until she was back again on the rooftops.