After he finally left the library, he might notice the figure in the ally across the way. Her back was to him as she peered down the road, but the hooded coat was unmistakable.

Nodding once to herself that the way was clear, and sticking to the shadows against the wall, she turned the corner, walking away from him. She had been so careful to check ahead... she hadn't even thought to see if someone was coming up from behind...