Sam heard the softer footsteps approaching a moment before he saw the other flashlight beam, and figured that there was a good chance that whoever it was, they were human. Monsters didn't usually carry flashlights. Still, he proceeded with caution, not wanting to get jumped, clobbered, or maced.
When he saw the petite blonde, he stopped, and looked her up and down before lowering his weapon--careful not to shine his light directly in her eyes. Oddly enough, she seemed almost as casual about running into someone after hours as he was, and that put him on guard. Last time he'd met a petite blonde on a hunt, she'd turned out to be a demon after all--and he so did not want another Ruby.
"That's funny," he quipped, because I'm writing a book on creepy after hours library occurrences."