The No Dogs Allowed sign on the door, that Alana had never noticed before, means she had to leave Ripper outside, with her leash attached to the metal bars where people leave their bikes. Luckily for Ripper, there is a very friendly basset-hound tied to the same pole, to keep her company.
The trio burst in eager to get their hands on some map, and almost bump into Yvonne, who is carrying a pile of books. One falls from the top of her pile.