D100: 52 (Pass)/SPOILER]
Waiting and observing for several days, Elena has trouble pinning down many workers. They tend to keep odd hours, and Elena's attempts at surveillance are often interrupted by barkers looking to recruit her for the area's many brothels. Finally, though, she's able to isolate one of the Blue Room's girls, though only one, a beauty who keeps a regular schedule, heading in to work the same time every night, finishing her shift and heading to a bar where she's a regular, and walking back to her apartment in the morning, like clockwork.
There's a few places along the woman's route that could work for a snatch, but her route is entirely within the red light district, which is highly populated and tightly packed. There's also the issue of how Elena actually plans to render the woman.