Flashing lights? Mysterious noises? Probably just mice, she thought, taking another bite of her sandwich. But in this town, who knows? Not like I've got much else to do, anyway.
She moved to set the sandwich on her thigh and dislodged a piece of tomato, causing it to tumble over the edge upon which she sat. She watched it fall down, down, down, and land inaudibly on the street below. A soft curse turned to curiosity as she noticed the lights below, barely visible, flicker slightly. A man was nearing the building, but from this angle, she didn't recognize him. Her eyes flicked from the man to what remained of her sandwich and back. She took a look over her shoulder, confirming that her gear was still safely stashed, pulled her mask down over her face, and tilted slowly over the edge. As she did, she kicked off, the motion one of practiced surety. The shot through the air, trailing shadows like a drop of food coloring descending through a glass of water. With nary a sound, she alighted upon the ground behind the man, just after he reached the door, landing in a small plume of inky gloom.
"Who are you and what is your business here?" she attempted to ask. Behind a bulky mask and through a mouth overfull with sandwich, she managed "Whobar yo n'wha-" before coughing, choking on the sandwich, sputtering, and holding up a hand, her index finger raised; the universal sign for "One moment please."