[Because, right now, they're looking at an area that was anything but. Zatanna had already lost track of exactly how far they'd run, and where they were heading. Back alleyways weren't her usual means of transportation, so she trusted Robin to navigate better than she could.]
[It took a few seconds to adjust to the lighting, and she made sure to stick close to Robin, just in case. Even though the two of them sticking together was most likely the only reason they were still being chased.]
[But, you know. Whatever.]
I think I see a back door entrance up ahead. [It looked a little similar to the entrances she and her dad would use when arriving at theaters] Think it's unlocked?